301 Area CodeGermantown, MD
Area code 301 covers Germantown and nearby communities in Maryland, in the Eastern Time (ET) zone, home to about 2,956,782 people across 314 cities. It overlays 227 and 240, so the region uses several codes and every local call needs all ten digits.
Overview
- Major City
- Germantown
- State
- Maryland (MD)
- Timezone
- Eastern Time (ET)
- Current Time
- –:––
- Overlay
- Yes – shares area with 227, 240
Overview of the 301 Area Code
What is the 301 area code?
The 301 area code serves Germantown, Maryland, alongside other established area codes. When you see a 301 number, it indicates a local number within this geographic area.
Why was area code 301 created?
Area code 301 has been in service since January 1, 1947. The same territory is now also served by the overlay codes 227 and 240.
Geographic Coverage of the 301 Area Code
The 301 area code serves Germantown and surrounding areas in Maryland. It operates within the Eastern Time (ET) time zone. It complements the coverage of area codes 227 and 240. This area code covers several key cities, including:
- Columbia
- Frederick
- Germantown
- Silver Spring
- Gaithersburg
- Rockville
Got a call from a 301 number? It came from Germantown, MD. Since 301 overlays with 227 and 240, every local call in the region needs all ten digits to land on the right line. Of the listed cities' population, Germantown accounts for about 4.1%; the rest is split across 313 smaller cities.
Germantown Area Codes Overview
Germantown is served by multiple area codes, reflecting its telecommunications needs. The 301 area code operates alongside 227, 240. Here are the area codes serving this region:
The introduction of the 301 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 301 cover?
| City | State | Population | Population in 301 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Columbia | MD | 99,615 | 11,397 | 4.1% | 11.4% |
| Frederick | MD | 89,537 | 89,537 | 3.7% | 100.0% |
| Germantown | MD | 86,395 | 86,395 | 3.5% | 100.0% |
| Silver Spring | MD | 71,452 | 71,452 | 2.9% | 100.0% |
| Gaithersburg | MD | 70,686 | 70,686 | 2.9% | 100.0% |
| Rockville | MD | 68,417 | 68,417 | 2.8% | 100.0% |
| Waldorf | MD | 67,752 | 67,752 | 2.8% | 100.0% |
| Bethesda | MD | 60,858 | 60,858 | 2.5% | 100.0% |
| Bowie | MD | 58,421 | 58,421 | 2.4% | 100.0% |
| Aspen Hill | MD | 48,759 | 48,759 | 2.0% | 100.0% |
| Wheaton | MD | 48,284 | 48,284 | 2.0% | 100.0% |
| Potomac | MD | 44,965 | 44,965 | 1.8% | 100.0% |
| Hagerstown | MD | 43,909 | 43,909 | 1.8% | 100.0% |
| North Bethesda | MD | 43,828 | 43,828 | 1.8% | 100.0% |
| Clinton | MD | 35,970 | 35,970 | 1.5% | 100.0% |
| College Park | MD | 34,667 | 34,667 | 1.4% | 100.0% |
| Olney | MD | 33,844 | 33,844 | 1.4% | 100.0% |
| Chillum | MD | 33,513 | 33,513 | 1.4% | 100.0% |
| Montgomery Village | MD | 32,032 | 32,032 | 1.3% | 100.0% |
| Laurel | MD | 30,238 | 30,238 | 1.2% | 100.0% |
| South Laurel | MD | 26,112 | 26,112 | 1.1% | 100.0% |
| Suitland | MD | 25,825 | 25,825 | 1.1% | 100.0% |
| Greenbelt | MD | 24,843 | 24,843 | 1.0% | 100.0% |
| North Potomac | MD | 24,410 | 24,410 | 1.0% | 100.0% |
| Scaggsville | MD | 24,333 | 24,333 | 1.0% | 100.0% |
| Fort Washington | MD | 23,717 | 23,717 | 1.0% | 100.0% |
| Fairland | MD | 23,681 | 23,681 | 1.0% | 100.0% |
| Landover | MD | 23,078 | 23,078 | 0.9% | 100.0% |
| Hyattsville | MD | 21,052 | 21,052 | 0.9% | 100.0% |
| Camp Springs | MD | 19,096 | 19,096 | 0.8% | 100.0% |
| Langley Park | MD | 18,755 | 18,755 | 0.8% | 100.0% |
| Cumberland | MD | 18,643 | 18,643 | 0.8% | 100.0% |
| Ballenger Creek | MD | 18,274 | 18,274 | 0.7% | 100.0% |
| Takoma Park | MD | 17,856 | 17,856 | 0.7% | 100.0% |
| Calverton | MD | 17,724 | 17,724 | 0.7% | 100.0% |
| Oxon Hill | MD | 17,722 | 17,722 | 0.7% | 100.0% |
| White Oak | MD | 17,403 | 17,403 | 0.7% | 100.0% |
| Glassmanor | MD | 17,295 | 17,295 | 0.7% | 100.0% |
| Seabrook | MD | 17,287 | 17,287 | 0.7% | 100.0% |
| Redland | MD | 17,242 | 17,242 | 0.7% | 100.0% |
| Beltsville | MD | 16,772 | 16,772 | 0.7% | 100.0% |
| Hillcrest Heights | MD | 16,469 | 16,469 | 0.7% | 100.0% |
| Maryland City | MD | 16,093 | 16,093 | 0.7% | 100.0% |
| East Riverdale | MD | 15,509 | 15,509 | 0.6% | 100.0% |
| Damascus | MD | 15,257 | 15,257 | 0.6% | 100.0% |
| Cloverly | MD | 15,126 | 15,126 | 0.6% | 100.0% |
| Adelphi | MD | 15,086 | 15,086 | 0.6% | 100.0% |
| Colesville | MD | 14,647 | 14,647 | 0.6% | 100.0% |
| Clarksburg | MD | 13,766 | 13,766 | 0.6% | 100.0% |
| New Carrollton | MD | 13,645 | 13,645 | 0.6% | 100.0% |
| Glenmont | MD | 13,529 | 13,529 | 0.6% | 100.0% |
| Glenn Dale | MD | 13,466 | 13,466 | 0.6% | 100.0% |
| Kettering | MD | 12,790 | 12,790 | 0.5% | 100.0% |
| Kemp Mill | MD | 12,564 | 12,564 | 0.5% | 100.0% |
| Forestville | MD | 12,353 | 12,353 | 0.5% | 100.0% |
| Travilah | MD | 12,159 | 12,159 | 0.5% | 100.0% |
| Bensville | MD | 11,923 | 11,923 | 0.5% | 100.0% |
| California | MD | 11,857 | 11,857 | 0.5% | 100.0% |
| Lexington Park | MD | 11,626 | 11,626 | 0.5% | 100.0% |
| La Plata | MD | 11,374 | 11,374 | 0.5% | 100.0% |
| Walker Mill | MD | 11,302 | 11,302 | 0.5% | 100.0% |
| Mitchellville | MD | 10,967 | 10,967 | 0.5% | 100.0% |
| Summerfield | MD | 10,898 | 10,898 | 0.4% | 100.0% |
| Largo | MD | 10,709 | 10,709 | 0.4% | 100.0% |
| Halfway | MD | 10,701 | 10,701 | 0.4% | 100.0% |
| Rosaryville | MD | 10,697 | 10,697 | 0.4% | 100.0% |
| Accokeek | MD | 10,573 | 10,573 | 0.4% | 100.0% |
| Bel Air | MD | 10,395 | 10,395 | 0.4% | 100.0% |
| Lanham | MD | 10,157 | 10,157 | 0.4% | 100.0% |
| Mount Airy | MD | 9,914 | 9,914 | 0.4% | 100.0% |
| Coral Hills | MD | 9,895 | 9,895 | 0.4% | 100.0% |
| Lake Arbor | MD | 9,776 | 9,776 | 0.4% | 100.0% |
| Bladensburg | MD | 9,635 | 9,635 | 0.4% | 100.0% |
| Brock Hall | MD | 9,552 | 9,552 | 0.4% | 100.0% |
| North Kensington | MD | 9,514 | 9,514 | 0.4% | 100.0% |
| Marlboro Village | MD | 9,438 | 9,438 | 0.4% | 100.0% |
| Fort Meade | MD | 9,327 | 0 | 0.4% | 0.0% |
| Friendly | MD | 9,250 | 9,250 | 0.4% | 100.0% |
| Urbana | MD | 9,175 | 9,175 | 0.4% | 100.0% |
| Marlton | MD | 9,031 | 9,031 | 0.4% | 100.0% |
| Brunswick | MD | 9,015 | 9,015 | 0.4% | 100.0% |
| Leisure World | MD | 8,749 | 8,749 | 0.4% | 100.0% |
| Linganore | MD | 8,543 | 8,543 | 0.4% | 100.0% |
| South Kensington | MD | 8,462 | 8,462 | 0.3% | 100.0% |
| Burtonsville | MD | 8,323 | 8,323 | 0.3% | 100.0% |
| Mount Rainier | MD | 8,269 | 8,269 | 0.3% | 100.0% |
| Four Corners | MD | 7,945 | 7,945 | 0.3% | 100.0% |
| Temple Hills | MD | 7,852 | 7,852 | 0.3% | 100.0% |
| Riverdale Park | MD | 7,296 | 7,296 | 0.3% | 100.0% |
| Westphalia | MD | 7,266 | 7,266 | 0.3% | 100.0% |
| Bryans Road | MD | 7,244 | 7,244 | 0.3% | 100.0% |
| Savage | MD | 7,054 | 7,054 | 0.3% | 100.0% |
| Frostburg | MD | 6,972 | 6,972 | 0.3% | 100.0% |
| Robinwood | MD | 6,918 | 6,918 | 0.3% | 100.0% |
| Darnestown | MD | 6,802 | 6,802 | 0.3% | 100.0% |
| Brandywine | MD | 6,719 | 6,719 | 0.3% | 100.0% |
| Forest Glen | MD | 6,582 | 6,582 | 0.3% | 100.0% |
| Walkersville | MD | 6,535 | 6,535 | 0.3% | 100.0% |
| Glenarden | MD | 6,394 | 6,394 | 0.3% | 100.0% |
| Woodlawn | MD | 6,334 | 6,334 | 0.3% | 100.0% |
| Thurmont | MD | 6,308 | 6,308 | 0.3% | 100.0% |
| Cheverly | MD | 6,125 | 6,125 | 0.3% | 100.0% |
| Hillandale | MD | 6,043 | 6,043 | 0.3% | 100.0% |
| Silver Hill | MD | 5,950 | 5,950 | 0.2% | 100.0% |
| District Heights | MD | 5,916 | 5,916 | 0.2% | 100.0% |
| Poolesville | MD | 5,856 | 5,856 | 0.2% | 100.0% |
| Shady Side | MD | 5,803 | 0 | 0.2% | 0.0% |
| Spring Ridge | MD | 5,795 | 5,795 | 0.2% | 100.0% |
| Fountainhead-Orchard Hills | MD | 5,666 | 5,666 | 0.2% | 100.0% |
| Ashton-Sandy Spring | MD | 5,628 | 5,628 | 0.2% | 100.0% |
| Marlow Heights | MD | 5,618 | 5,618 | 0.2% | 100.0% |
| Layhill | MD | 5,169 | 5,169 | 0.2% | 100.0% |
| Middletown | MD | 5,055 | 5,055 | 0.2% | 100.0% |
| Leonardtown | MD | 5,041 | 5,041 | 0.2% | 100.0% |
| Fairwood | MD | 5,031 | 5,031 | 0.2% | 100.0% |
| Peppermill Village | MD | 4,895 | 4,895 | 0.2% | 100.0% |
| Friendship Heights Village | MD | 4,698 | 4,698 | 0.2% | 100.0% |
| Cresaptown | MD | 4,592 | 4,592 | 0.2% | 100.0% |
| Seat Pleasant | MD | 4,518 | 4,518 | 0.2% | 100.0% |
| North Laurel | MD | 4,474 | 4,474 | 0.2% | 100.0% |
| Indian Head | MD | 4,247 | 4,247 | 0.2% | 100.0% |
| West Laurel | MD | 4,230 | 4,230 | 0.2% | 100.0% |
| Capitol Heights | MD | 4,038 | 4,038 | 0.2% | 100.0% |
| Woodmore | MD | 3,936 | 3,936 | 0.2% | 100.0% |
| Boonsboro | MD | 3,850 | 3,850 | 0.2% | 100.0% |
| Golden Beach | MD | 3,796 | 3,796 | 0.2% | 100.0% |
| Brentwood | MD | 3,795 | 3,795 | 0.2% | 100.0% |
| National Harbor | MD | 3,788 | 3,788 | 0.2% | 100.0% |
| Marlboro Meadows | MD | 3,672 | 3,672 | 0.2% | 100.0% |
| La Vale | MD | 3,551 | 3,551 | 0.1% | 100.0% |
| Brookmont | MD | 3,468 | 3,468 | 0.1% | 100.0% |
| Berwyn Heights | MD | 3,325 | 3,325 | 0.1% | 100.0% |
| Smithsburg | MD | 3,194 | 3,194 | 0.1% | 100.0% |
| Maugansville | MD | 3,071 | 3,071 | 0.1% | 100.0% |
| Melwood | MD | 3,051 | 3,051 | 0.1% | 100.0% |
| Springdale | MD | 2,994 | 2,994 | 0.1% | 100.0% |
| Andrews AFB | MD | 2,973 | 2,973 | 0.1% | 100.0% |
| St. James | MD | 2,953 | 2,953 | 0.1% | 100.0% |
| Chevy Chase | MD | 2,927 | 2,927 | 0.1% | 100.0% |
| Chevy Chase | MD | 2,927 | 2,927 | 0.1% | 100.0% |
| Emmitsburg | MD | 2,920 | 2,920 | 0.1% | 100.0% |
| Forest Heights | MD | 2,639 | 2,639 | 0.1% | 100.0% |
| Croom | MD | 2,631 | 2,631 | 0.1% | 100.0% |
| Braddock Heights | MD | 2,608 | 2,608 | 0.1% | 100.0% |
| Paramount-Long Meadow | MD | 2,571 | 2,571 | 0.1% | 100.0% |
| Potomac Park | MD | 2,530 | 2,530 | 0.1% | 100.0% |
| Konterra | MD | 2,527 | 2,527 | 0.1% | 100.0% |
| Dunkirk | MD | 2,520 | 0 | 0.1% | 0.0% |
| University Park | MD | 2,431 | 2,431 | 0.1% | 100.0% |
| Derwood | MD | 2,381 | 2,381 | 0.1% | 100.0% |
| Adamstown | MD | 2,372 | 2,372 | 0.1% | 100.0% |
| Wilson-Conococheague | MD | 2,282 | 2,282 | 0.1% | 100.0% |
| Cabin John | MD | 2,280 | 2,280 | 0.1% | 100.0% |
| Hughesville | MD | 2,197 | 2,197 | 0.1% | 100.0% |
| North Beach | MD | 2,178 | 0 | 0.1% | 0.0% |
| Kensington | MD | 2,155 | 2,155 | 0.1% | 100.0% |
| Baden | MD | 2,128 | 2,128 | 0.1% | 100.0% |
| Mountain Lake Park | MD | 2,118 | 2,118 | 0.1% | 100.0% |
| Jefferson | MD | 2,111 | 2,111 | 0.1% | 100.0% |
| Williamsport | MD | 2,102 | 2,102 | 0.1% | 100.0% |
| Chevy Chase Village | MD | 2,071 | 2,071 | 0.1% | 100.0% |
| Fulton | MD | 2,049 | 2,049 | 0.1% | 100.0% |
| Queenland | MD | 1,929 | 1,929 | 0.1% | 100.0% |
| Myersville | MD | 1,865 | 1,865 | 0.1% | 100.0% |
| Oakland | MD | 1,813 | 1,813 | 0.1% | 100.0% |
| Landover Hills | MD | 1,799 | 1,799 | 0.1% | 100.0% |
| Westernport | MD | 1,769 | 1,769 | 0.1% | 100.0% |
| New Market | MD | 1,609 | 1,609 | 0.1% | 100.0% |
| Edmonston | MD | 1,609 | 1,609 | 0.1% | 100.0% |
| Spencerville | MD | 1,594 | 1,594 | 0.1% | 100.0% |
| Colmar Manor | MD | 1,586 | 1,586 | 0.1% | 100.0% |
| Hancock | MD | 1,570 | 1,570 | 0.1% | 100.0% |
| Fairmount Heights | MD | 1,522 | 1,522 | 0.1% | 100.0% |
| Mechanicsville | MD | 1,508 | 1,508 | 0.1% | 100.0% |
| Cavetown | MD | 1,473 | 1,473 | 0.1% | 100.0% |
| Point of Rocks | MD | 1,466 | 1,466 | 0.1% | 100.0% |
| Bartonsville | MD | 1,451 | 1,451 | 0.1% | 100.0% |
| Charlotte Hall | MD | 1,420 | 1,420 | 0.1% | 100.0% |
| Cottage City | MD | 1,322 | 1,322 | 0.1% | 100.0% |
| Morningside | MD | 1,235 | 1,235 | 0.1% | 100.0% |
| Keedysville | MD | 1,229 | 1,229 | 0.1% | 100.0% |
| Somerset | MD | 1,203 | 1,203 | 0.1% | 100.0% |
| Cobb Island | MD | 1,166 | 1,166 | 0.1% | 100.0% |
| Potomac Heights | MD | 1,117 | 1,117 | 0.1% | 100.0% |
| Woodsboro | MD | 1,114 | 1,114 | 0.1% | 100.0% |
| Highfield-Cascade | MD | 1,112 | 1,112 | 0.1% | 100.0% |
| Bowling Green | MD | 1,077 | 1,077 | 0.0% | 100.0% |
| Highland | MD | 1,034 | 1,034 | 0.0% | 100.0% |
| Buckeystown | MD | 1,019 | 1,019 | 0.0% | 100.0% |
| Chevy Chase View | MD | 1,017 | 1,017 | 0.0% | 100.0% |
| Garrett Park | MD | 1,004 | 1,004 | 0.0% | 100.0% |
| Lonaconing | MD | 987 | 987 | 0.0% | 100.0% |
| Aquasco | MD | 981 | 981 | 0.0% | 100.0% |
| Grantsville | MD | 951 | 951 | 0.0% | 100.0% |
| Martin's Additions | MD | 950 | 950 | 0.0% | 100.0% |
| Libertytown | MD | 950 | 950 | 0.0% | 100.0% |
| Eckhart Mines | MD | 932 | 932 | 0.0% | 100.0% |
| Mount Savage | MD | 873 | 873 | 0.0% | 100.0% |
| Piney Point | MD | 864 | 864 | 0.0% | 100.0% |
| Funkstown | MD | 858 | 858 | 0.0% | 100.0% |
| Chevy Chase Section Three | MD | 802 | 802 | 0.0% | 100.0% |
| Upper Marlboro | MD | 718 | 718 | 0.0% | 100.0% |
| Cedarville | MD | 717 | 717 | 0.0% | 100.0% |
| Rawlings | MD | 693 | 693 | 0.0% | 100.0% |
| North Chevy Chase | MD | 691 | 691 | 0.0% | 100.0% |
| Chevy Chase Section Five | MD | 684 | 684 | 0.0% | 100.0% |
| Bryantown | MD | 655 | 655 | 0.0% | 100.0% |
| Bowmans Addition | MD | 627 | 627 | 0.0% | 100.0% |
| North Brentwood | MD | 587 | 587 | 0.0% | 100.0% |
| Laytonsville | MD | 586 | 586 | 0.0% | 100.0% |
| Fairplay | MD | 580 | 580 | 0.0% | 100.0% |
| Leitersburg | MD | 573 | 573 | 0.0% | 100.0% |
| Ellerslie | MD | 572 | 572 | 0.0% | 100.0% |
| Mount Aetna | MD | 561 | 561 | 0.0% | 100.0% |
| Sharpsburg | MD | 561 | 561 | 0.0% | 100.0% |
| Finzel | MD | 547 | 547 | 0.0% | 100.0% |
| Pomfret | MD | 517 | 517 | 0.0% | 100.0% |
| Mount Lena | MD | 515 | 515 | 0.0% | 100.0% |
| Washington Grove | MD | 512 | 512 | 0.0% | 100.0% |
| McCoole | MD | 511 | 511 | 0.0% | 100.0% |
| Loch Lynn Heights | MD | 483 | 483 | 0.0% | 100.0% |
| Midland | MD | 476 | 476 | 0.0% | 100.0% |
| Tilghmanton | MD | 465 | 465 | 0.0% | 100.0% |
| Tall Timbers | MD | 462 | 462 | 0.0% | 100.0% |
| Barton | MD | 457 | 457 | 0.0% | 100.0% |
| Corriganville | MD | 455 | 455 | 0.0% | 100.0% |
| Pinesburg | MD | 449 | 449 | 0.0% | 100.0% |
| Friendsville | MD | 427 | 427 | 0.0% | 100.0% |
| Monrovia | MD | 416 | 416 | 0.0% | 100.0% |
| San Mar | MD | 384 | 384 | 0.0% | 100.0% |
| Clear Spring | MD | 375 | 375 | 0.0% | 100.0% |
| Grahamtown | MD | 364 | 364 | 0.0% | 100.0% |
| Zihlman | MD | 362 | 362 | 0.0% | 100.0% |
| Downsville | MD | 355 | 355 | 0.0% | 100.0% |
| Sabillasville | MD | 354 | 354 | 0.0% | 100.0% |
| Pleasant Grove | MD | 353 | 353 | 0.0% | 100.0% |
| Bagtown | MD | 333 | 333 | 0.0% | 100.0% |
| Accident | MD | 332 | 332 | 0.0% | 100.0% |
| Midlothian | MD | 320 | 320 | 0.0% | 100.0% |
| Fort Ritchie | MD | 314 | 314 | 0.0% | 100.0% |
| Bloomington | MD | 305 | 305 | 0.0% | 100.0% |
| Deer Park | MD | 300 | 300 | 0.0% | 100.0% |
| Franklin | MD | 290 | 290 | 0.0% | 100.0% |
| Kitzmiller | MD | 288 | 288 | 0.0% | 100.0% |
| Glen Echo | MD | 285 | 285 | 0.0% | 100.0% |
| Danville | MD | 271 | 271 | 0.0% | 100.0% |
| Rosemont | MD | 269 | 269 | 0.0% | 100.0% |
| Crellin | MD | 264 | 264 | 0.0% | 100.0% |
| Benedict | MD | 261 | 261 | 0.0% | 100.0% |
| St. George Island | MD | 257 | 257 | 0.0% | 100.0% |
| Breathedsville | MD | 254 | 254 | 0.0% | 100.0% |
| Beaver Creek | MD | 251 | 251 | 0.0% | 100.0% |
| Moscow | MD | 240 | 240 | 0.0% | 100.0% |
| Chewsville | MD | 238 | 238 | 0.0% | 100.0% |
| Mapleville | MD | 238 | 238 | 0.0% | 100.0% |
| Shaft | MD | 235 | 235 | 0.0% | 100.0% |
| Garretts Mill | MD | 234 | 234 | 0.0% | 100.0% |
| Edgemont | MD | 231 | 231 | 0.0% | 100.0% |
| Greensburg | MD | 229 | 229 | 0.0% | 100.0% |
| Jugtown | MD | 204 | 204 | 0.0% | 100.0% |
| Queen Anne | MD | 192 | 192 | 0.0% | 100.0% |
| Sandy Hook | MD | 188 | 188 | 0.0% | 100.0% |
| Cearfoss | MD | 178 | 178 | 0.0% | 100.0% |
| Flintstone | MD | 177 | 177 | 0.0% | 100.0% |
| Rohrersville | MD | 175 | 175 | 0.0% | 100.0% |
| Bier | MD | 173 | 173 | 0.0% | 100.0% |
| Trego-Rohrersville Station | MD | 172 | 172 | 0.0% | 100.0% |
| Charlton | MD | 171 | 171 | 0.0% | 100.0% |
| Brookeville | MD | 168 | 168 | 0.0% | 100.0% |
| Pecktonville | MD | 167 | 167 | 0.0% | 100.0% |
| Ringgold | MD | 166 | 166 | 0.0% | 100.0% |
| Dargan | MD | 165 | 165 | 0.0% | 100.0% |
| Mount Briar | MD | 160 | 160 | 0.0% | 100.0% |
| Pondsville | MD | 158 | 158 | 0.0% | 100.0% |
| Carlos | MD | 153 | 153 | 0.0% | 100.0% |
| Burkittsville | MD | 145 | 145 | 0.0% | 100.0% |
| Barnesville | MD | 145 | 145 | 0.0% | 100.0% |
| Vale Summit | MD | 139 | 139 | 0.0% | 100.0% |
| Yarrowsburg | MD | 133 | 133 | 0.0% | 100.0% |
| Mercersville | MD | 130 | 130 | 0.0% | 100.0% |
| Gilmore | MD | 127 | 127 | 0.0% | 100.0% |
| Kemps Mill | MD | 126 | 126 | 0.0% | 100.0% |
| Klondike | MD | 118 | 118 | 0.0% | 100.0% |
| Nikep | MD | 116 | 116 | 0.0% | 100.0% |
| Woodland | MD | 113 | 113 | 0.0% | 100.0% |
| Jennings | MD | 113 | 113 | 0.0% | 100.0% |
| Gapland | MD | 109 | 109 | 0.0% | 100.0% |
| Rock Point | MD | 107 | 107 | 0.0% | 100.0% |
| Gorman | MD | 106 | 106 | 0.0% | 100.0% |
| Dawson | MD | 103 | 103 | 0.0% | 100.0% |
| Brownsville | MD | 89 | 89 | 0.0% | 100.0% |
| Antietam | MD | 89 | 89 | 0.0% | 100.0% |
| Oldtown | MD | 86 | 86 | 0.0% | 100.0% |
| Hutton | MD | 86 | 86 | 0.0% | 100.0% |
| Big Spring | MD | 84 | 84 | 0.0% | 100.0% |
| Luke | MD | 84 | 84 | 0.0% | 100.0% |
| Big Pool | MD | 82 | 82 | 0.0% | 100.0% |
| Fairview | MD | 76 | 76 | 0.0% | 100.0% |
| Barrelville | MD | 73 | 73 | 0.0% | 100.0% |
| Clarysville | MD | 73 | 73 | 0.0% | 100.0% |
| Detmold | MD | 71 | 71 | 0.0% | 100.0% |
| Middleburg | MD | 70 | 70 | 0.0% | 100.0% |
| Eagle Harbor | MD | 67 | 67 | 0.0% | 100.0% |
| Indian Springs | MD | 64 | 64 | 0.0% | 100.0% |
| Swanton | MD | 58 | 58 | 0.0% | 100.0% |
| National | MD | 56 | 56 | 0.0% | 100.0% |
| Ernstville | MD | 56 | 56 | 0.0% | 100.0% |
| Spring Gap | MD | 55 | 55 | 0.0% | 100.0% |
| Reid | MD | 54 | 54 | 0.0% | 100.0% |
| Little Orleans | MD | 42 | 42 | 0.0% | 100.0% |
| Ocean | MD | 32 | 32 | 0.0% | 100.0% |
| Bakersville | MD | 30 | 30 | 0.0% | 100.0% |
| Eakles Mill | MD | 27 | 27 | 0.0% | 100.0% |
| Port Tobacco Village | MD | 21 | 21 | 0.0% | 100.0% |
City population is shown in full. The share of each city inside 301 is measured from Census tract centroids, not estimated from a rate-center match – so a city split between two codes appears on both, at the fraction each one actually holds. The “% of listed-city population” column uses the full populations of the cities listed here.
What counties does area code 301 cover?
2,956,782 residents across 12 counties, counted inside the 301 boundary — a county split between codes contributes only its part.
| County | State | Population in 301 | % of area-code footprint | % of County |
|---|---|---|---|---|
| Montgomery County | MD | 1,062,061 | 36% | 100% |
| Prince George's County | MD | 967,201 | 33% | 100% |
| Frederick County | MD | 268,694 | 9% | 99% |
| Charles County | MD | 166,617 | 6% | 100% |
| Washington County | MD | 154,705 | 5% | 100% |
| St. Mary's County | MD | 113,777 | 4% | 100% |
| Howard County | MD | 89,914 | 3% | 27% |
| Allegany County | MD | 68,106 | 2% | 100% |
| Garrett County | MD | 28,806 | 1% | 100% |
| Anne Arundel County | MD | 19,157 | 1% | 3% |
| Carroll County | MD | 10,782 | 0% | 6% |
| Berkeley County | WV | 6,962 | 0% | 6% |
Sources: City populations – U.S. Census Bureau PEP, Vintage 2024 (SUB-IP-EST2024-POP). State populations – the same program, Vintage 2025 (CO-EST2025-ALLDATA). Area-code footprint and county populations – 2020 Census Centers of Population, mapped against NANP area code boundaries. The share of each city inside a code is measured the same way, against Census place boundaries from the Census Bureau's TIGERweb service. Area code assignments – NANPA CO Code data. See our data methodology.
Has area code 301 been reported for unwanted calls?
Yes – 1,351 unwanted-call complaints were reported to the FTC for numbers showing a 301 area code (May 29 – Aug 14, 2026).
- 65% robocalls
- ↑ 11% vs prior period
Most-reported subjects
- Other34%462
- Reducing your debt (credit cards, mortgage, student loans)16%218
- Home improvement & cleaning15%200
Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints. Source: FTC Do Not Call (DNC) Reported Calls Data, retrieved 2026-08-17.
Which prefixes and exchanges belong to area code 301?
78% assigned to a telco
- 82% Landline
- 18% Wireless
- 0% Unknown
of 784 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (301)200- | Landline | Bandwidth.Com Clec |
| (301)201- | Wireless | New Cingular Wireless Pcs |
| (301)202- | Wireless | New Cingular Wireless Pcs |
| (301)203- | Landline | Verizon Maryland |
| (301)204- | Wireless | New Cingular Wireless Pcs |
| (301)205- | Landline | Verizon Maryland |
| (301)206- | Landline | Verizon Maryland |
| (301)207- | Wireless | Usa Mobility Wireless |
| (301)208- | Landline | Verizon Maryland |
| (301)209- | Landline | Verizon Maryland |
| (301)210- | Landline | Verizon Maryland |
| (301)212- | Landline | Verizon Maryland |
| (301)213- | Wireless | Sprint Spectrum |
| (301)214- | Landline | Verizon Maryland |
| (301)215- | Landline | Verizon Maryland |
| (301)216- | Landline | Verizon Maryland |
| (301)217- | Landline | Verizon Maryland |
| (301)218- | Landline | Verizon Maryland |
| (301)219- | Wireless | New Cingular Wireless Pcs |
| (301)220- | Landline | Verizon Maryland |
| (301)221- | Wireless | New Cingular Wireless Pcs |
| (301)222- | Landline | Cavalier Telephone Mid-Atlantic |
| (301)223- | Landline | Verizon Maryland |
| (301)224- | Wireless | Usa Mobility Wireless |
| (301)225- | Landline | Teleport Communications America |
| (301)226- | Landline | Verizon Maryland |
| (301)227- | Landline | Verizon Maryland |
| (301)228- | Landline | Verizon Maryland |
| (301)229- | Landline | Verizon Maryland |
| (301)230- | Landline | Verizon Maryland |
| (301)231- | Landline | Verizon Maryland |
| (301)232- | Landline | Mcimetro Access Transmission Services |
| (301)233- | Wireless | Verizon Wireless |
| (301)234- | Landline | Verizon Maryland |
| (301)235- | Landline | Mcimetro Access Transmission Services |
| (301)236- | Landline | Verizon Maryland |
| (301)237- | Wireless | Sprint Spectrum |
| (301)238- | Landline | Verizon Maryland |
| (301)239- | Landline | Verizon Maryland |
| (301)240- | Landline | Verizon Maryland |
| (301)241- | Landline | Verizon Maryland |
| (301)242- | Landline | Mcimetro Access Transmission Services |
| (301)243- | Landline | Verizon Maryland |
| (301)244- | Landline | Paetec Communications |
| (301)245- | Landline | Verizon Maryland |
| (301)246- | Landline | Verizon Maryland |
| (301)247- | Wireless | New Cingular Wireless Pcs |
| (301)248- | Landline | Verizon Maryland |
| (301)249- | Landline | Verizon Maryland |
| (301)250- | Landline | Mcimetro Access Transmission Services |
| (301)251- | Landline | Verizon Maryland |
| (301)252- | Wireless | Sprint Spectrum |
| (301)253- | Landline | Verizon Maryland |
| (301)254- | Wireless | Sprint Spectrum |
| (301)255- | Landline | Verizon Maryland |
| (301)256- | Landline | Mcimetro Access Transmission Services |
| (301)257- | Wireless | Sprint Spectrum |
| (301)258- | Landline | Verizon Maryland |
| (301)259- | Landline | Verizon Maryland |
| (301)260- | Landline | Verizon Maryland |
| (301)261- | Landline | Verizon Maryland |
| (301)262- | Landline | Verizon Maryland |
| (301)263- | Landline | Verizon Maryland |
| (301)264- | Landline | Verizon Maryland |
| (301)265- | Landline | Verizon Maryland |
| (301)266- | Wireless | New Cingular Wireless Pcs |
| (301)267- | Wireless | Sprint Spectrum |
| (301)268- | Landline | United States Cel Md |
| (301)269- | Landline | Mcimetro Access Transmission Services |
| (301)270- | Landline | Verizon Maryland |
| (301)271- | Landline | Verizon Maryland |
| (301)272- | Landline | Mcimetro Access Transmission Services |
| (301)273- | Landline | Mcimetro Access Transmission Services |
| (301)274- | Landline | Verizon Maryland |
| (301)275- | Wireless | New Cingular Wireless Pcs |
| (301)276- | Landline | Mcimetro Access Transmission Services |
| (301)277- | Landline | Verizon Maryland |
| (301)278- | Landline | Mcimetro Access Transmission Services |
| (301)279- | Landline | Verizon Maryland |
| (301)280- | Landline | Verizon Maryland |
| (301)281- | Landline | Mcimetro Access Transmission Services |
| (301)282- | Landline | Verizon Maryland |
| (301)283- | Landline | Verizon Maryland |
| (301)284- | Landline | Mcimetro Access Transmission Services |
| (301)285- | Landline | Verizon Maryland |
| (301)286- | Landline | Verizon Maryland |
| (301)287- | Landline | Mcimetro Access Transmission Services |
| (301)288- | Landline | Mcimetro Access Transmission Services |
| (301)289- | Landline | Mcimetro Access Transmission Services |
| (301)290- | Landline | Verizon Maryland |
| (301)291- | Landline | Mcimetro Access Transmission Services |
| (301)292- | Landline | Verizon Maryland |
| (301)293- | Landline | Verizon Maryland |
| (301)294- | Landline | Verizon Maryland |
| (301)295- | Landline | Verizon Maryland |
| (301)296- | Landline | Mcimetro Access Transmission Services |
| (301)297- | Landline | Verizon Maryland |
| (301)298- | Landline | Mcimetro Access Transmission Services |
| (301)299- | Landline | Verizon Maryland |
| (301)300- | Wireless | Verizon Wireless |
| (301)301- | Landline | Onvoy |
| (301)302- | Wireless | Sprint Spectrum |
| (301)303- | Wireless | Usa Mobility Wireless |
| (301)304- | Landline | Comcast Ip Phone |
| (301)305- | Wireless | Sprint Spectrum |
| (301)306- | Landline | Verizon Maryland |
| (301)307- | Landline | Verizon Maryland |
| (301)308- | Wireless | Usa Mobility Wireless |
| (301)309- | Landline | Verizon Maryland |
| (301)310- | Landline | Verizon Maryland |
| (301)312- | Wireless | New Cingular Wireless Pcs |
| (301)313- | Landline | Verizon Maryland |
| (301)314- | Landline | Paetec Communications |
| (301)315- | Landline | Verizon Maryland |
| (301)316- | Landline | Verizon Maryland |
| (301)317- | Landline | Verizon Maryland |
| (301)318- | Wireless | New Cingular Wireless Pcs |
| (301)319- | Landline | Verizon Maryland |
| (301)320- | Landline | Verizon Maryland |
| (301)321- | Landline | Onvoy |
| (301)322- | Landline | Verizon Maryland |
| (301)323- | Landline | Level 3 Telecom Of Maryland |
| (301)324- | Landline | Verizon Maryland |
| (301)325- | Wireless | Verizon Wireless |
| (301)326- | Landline | Omnipoint Communications Cap Operations |
| (301)327- | Landline | Comcast Ip Phone |
| (301)328- | Landline | Comcast Ip Phone |
| (301)329- | Landline | Onvoy |
| (301)330- | Landline | Verizon Maryland |
| (301)331- | Wireless | New Cingular Wireless Pcs |
| (301)332- | Wireless | New Cingular Wireless Pcs |
| (301)333- | Landline | Verizon Maryland |
| (301)334- | Landline | Verizon Maryland |
| (301)335- | Wireless | New Cingular Wireless Pcs |
| (301)336- | Landline | Verizon Maryland |
| (301)337- | Landline | Mcimetro Access Transmission Services |
| (301)338- | Landline | Idt America |
| (301)339- | Landline | Cavalier Telephone Mid-Atlantic |
| (301)340- | Landline | Verizon Maryland |
| (301)341- | Landline | Verizon Maryland |
| (301)342- | Landline | Verizon Maryland |
| (301)343- | Wireless | Sprint Spectrum |
| (301)344- | Landline | Verizon Maryland |
| (301)345- | Landline | Verizon Maryland |
| (301)346- | Wireless | New Cingular Wireless Pcs |
| (301)347- | Landline | Verizon Maryland |
| (301)348- | Landline | Mcimetro Access Transmission Services |
| (301)349- | Landline | Verizon Maryland |
| (301)350- | Landline | Verizon Maryland |
| (301)351- | Wireless | Verizon Wireless |
| (301)352- | Landline | Verizon Maryland |
| (301)353- | Landline | Verizon Maryland |
| (301)354- | Landline | Teleport Communications America |
| (301)355- | Landline | Verizon Maryland |
| (301)356- | Landline | Global Telecom Brokers |
| (301)357- | Wireless | Verizon Wireless |
| (301)358- | Landline | Level 3 Communications |
| (301)359- | Landline | Verizon Maryland |
| (301)360- | Landline | Verizon Maryland |
| (301)361- | Landline | Level 3 Telecom Of Maryland |
| (301)362- | Landline | Verizon Maryland |
| (301)363- | Landline | Level 3 Communications |
| (301)364- | Landline | Mcimetro Access Transmission Services |
| (301)365- | Landline | Verizon Maryland |
| (301)366- | Wireless | Sprint Spectrum |
| (301)367- | Wireless | Verizon Wireless |
| (301)368- | Landline | Verizon Maryland |
| (301)369- | Landline | Verizon Maryland |
| (301)370- | Wireless | Sprint Spectrum |
| (301)371- | Landline | Verizon Maryland |
| (301)372- | Landline | Verizon Maryland |
| (301)373- | Landline | Verizon Maryland |
| (301)374- | Landline | Verizon Maryland |
| (301)375- | Landline | Verizon Maryland |
| (301)376- | Landline | Verizon Maryland |
| (301)377- | Landline | Comcast Ip Phone |
| (301)378- | Landline | Comcast Ip Phone |
| (301)379- | Wireless | Sprint Spectrum |
| (301)380- | Landline | Verizon Maryland |
| (301)381- | Landline | Onvoy |
| (301)382- | Landline | Verizon Maryland |
| (301)383- | Landline | Comcast Ip Phone |
| (301)384- | Landline | Verizon Maryland |
| (301)385- | Wireless | New Cingular Wireless Pcs |
| (301)386- | Landline | Verizon Maryland |
| (301)387- | Landline | Verizon Maryland |
| (301)388- | Landline | Verizon Maryland |
| (301)389- | Landline | Level 3 Telecom Of Maryland |
| (301)390- | Landline | Verizon Maryland |
| (301)391- | Landline | Verizon Maryland |
| (301)392- | Landline | Verizon Maryland |
| (301)393- | Landline | Verizon Maryland |
| (301)394- | Landline | Verizon Maryland |
| (301)395- | Wireless | Verizon Wireless |
| (301)396- | Landline | Verizon Maryland |
| (301)397- | Landline | Verizon Maryland |
| (301)398- | Landline | Verizon Maryland |
| (301)399- | Wireless | Sprint Spectrum |
| (301)400- | Landline | Verizon Maryland |
| (301)401- | Wireless | New Cingular Wireless Pcs |
| (301)402- | Landline | Verizon Maryland |
| (301)403- | Landline | Verizon Maryland |
| (301)404- | Wireless | Sprint Spectrum |
| (301)405- | Landline | Paetec Communications |
| (301)406- | Wireless | Usa Mobility Wireless |
| (301)407- | Landline | Verizon Maryland |
| (301)408- | Landline | Verizon Maryland |
| (301)409- | Landline | Onvoy Spectrum |
| (301)410- | Landline | Onvoy Spectrum |
| (301)412- | Wireless | New Cingular Wireless Pcs |
| (301)413- | Landline | Verizon Maryland |
| (301)414- | Landline | Verizon Maryland |
| (301)415- | Landline | Verizon Maryland |
| (301)416- | Landline | Verizon Maryland |
| (301)417- | Landline | Verizon Maryland |
| (301)418- | Landline | Verizon Maryland |
| (301)419- | Landline | Verizon Maryland |
| (301)420- | Landline | Verizon Maryland |
| (301)421- | Landline | Verizon Maryland |
| (301)422- | Landline | Verizon Maryland |
| (301)423- | Landline | Verizon Maryland |
| (301)424- | Landline | Verizon Maryland |
| (301)425- | Landline | Verizon Maryland |
| (301)426- | Landline | Verizon Maryland |
| (301)427- | Landline | Verizon Maryland |
| (301)428- | Landline | Verizon Maryland |
| (301)429- | Landline | Verizon Maryland |
| (301)430- | Landline | Verizon Maryland |
| (301)431- | Landline | Verizon Maryland |
| (301)432- | Landline | Verizon Maryland |
| (301)433- | Landline | Verizon Maryland |
| (301)434- | Landline | Verizon Maryland |
| (301)435- | Landline | Verizon Maryland |
| (301)436- | Landline | Verizon Maryland |
| (301)437- | Wireless | Sprint Spectrum |
| (301)438- | Landline | Verizon Maryland |
| (301)439- | Landline | Verizon Maryland |
| (301)440- | Wireless | Sprint Spectrum |
| (301)441- | Landline | Verizon Maryland |
| (301)442- | Wireless | Sprint Spectrum |
| (301)443- | Landline | Verizon Maryland |
| (301)444- | Landline | Verizon Maryland |
| (301)445- | Landline | Verizon Maryland |
| (301)446- | Landline | Verizon Maryland |
| (301)447- | Landline | Verizon Maryland |
| (301)448- | Landline | Comcast Ip Phone |
| (301)449- | Landline | Verizon Maryland |
| (301)450- | Wireless | New Cingular Wireless Pcs |
| (301)451- | Landline | Verizon Maryland |
| (301)452- | Wireless | Verizon Wireless |
| (301)453- | Landline | Verizon Maryland |
| (301)454- | Landline | Verizon Maryland |
| (301)455- | Wireless | Sprint Spectrum |
| (301)456- | Landline | Comcast Ip Phone |
| (301)457- | Landline | Verizon Maryland |
| (301)458- | Landline | Teleport Communications America |
| (301)459- | Landline | Verizon Maryland |
| (301)460- | Landline | Verizon Maryland |
| (301)461- | Wireless | Verizon Wireless |
| (301)462- | Wireless | Sprint Spectrum |
| (301)463- | Landline | Verizon Maryland |
| (301)464- | Landline | Verizon Maryland |
| (301)465- | Wireless | Sprint Spectrum |
| (301)466- | Wireless | Verizon Wireless |
| (301)467- | Wireless | Verizon Wireless |
| (301)468- | Landline | Verizon Maryland |
| (301)469- | Landline | Verizon Maryland |
| (301)470- | Landline | Verizon Maryland |
| (301)471- | Wireless | Verizon Wireless |
| (301)472- | Landline | Verizon Maryland |
| (301)473- | Landline | Verizon Maryland |
| (301)474- | Landline | Verizon Maryland |
| (301)475- | Landline | Verizon Maryland |
| (301)476- | Landline | Verizon Maryland |
| (301)477- | Landline | Comcast Ip Phone |
| (301)478- | Landline | Verizon Maryland |
| (301)479- | Landline | Mcimetro Access Transmission Services |
| (301)480- | Landline | Verizon Maryland |
| (301)481- | Wireless | Verizon Wireless |
| (301)482- | Landline | Verizon Maryland |
| (301)483- | Landline | Verizon Maryland |
| (301)484- | Landline | Comcast Ip Phone |
| (301)485- | Landline | Comcast Ip Phone |
| (301)486- | Landline | Verizon Maryland |
| (301)487- | Landline | Verizon Maryland |
| (301)488- | Landline | Verizon Maryland |
| (301)489- | Landline | Verizon Maryland |
| (301)490- | Landline | Verizon Maryland |
| (301)491- | Landline | United States Cel Md |
| (301)492- | Landline | Verizon Maryland |
| (301)493- | Landline | Verizon Maryland |
| (301)494- | Landline | Verizon Maryland |
| (301)495- | Landline | Verizon Maryland |
| (301)496- | Landline | Verizon Maryland |
| (301)497- | Landline | Verizon Maryland |
| (301)498- | Landline | Verizon Maryland |
| (301)499- | Landline | Verizon Maryland |
| (301)500- | Landline | Xo Maryland |
| (301)501- | Wireless | New Cingular Wireless Pcs |
| (301)502- | Wireless | Verizon Wireless |
| (301)503- | Wireless | New Cingular Wireless Pcs |
| (301)504- | Landline | Verizon Maryland |
| (301)505- | Landline | Verizon Maryland |
| (301)506- | Wireless | Usa Mobility Wireless |
| (301)507- | Landline | Verizon Maryland |
| (301)508- | Wireless | New Cingular Wireless Pcs |
| (301)509- | Wireless | Verizon Wireless |
| (301)510- | Wireless | Usa Mobility Wireless |
| (301)512- | Wireless | Verizon Wireless |
| (301)513- | Landline | Verizon Maryland |
| (301)514- | Wireless | Verizon Wireless |
| (301)515- | Landline | Verizon Maryland |
| (301)516- | Landline | Verizon Maryland |
| (301)517- | Landline | Verizon Maryland |
| (301)518- | Wireless | Verizon Wireless |
| (301)519- | Landline | Verizon Maryland |
| (301)520- | Wireless | Verizon Wireless |
| (301)521- | Landline | Verizon Maryland |
| (301)522- | Landline | Verizon Maryland |
| (301)523- | Wireless | Sprint Spectrum |
| (301)524- | Wireless | Sprint Spectrum |
| (301)525- | Landline | Quantum Telecommunications |
| (301)526- | Wireless | New Cingular Wireless Pcs |
| (301)527- | Landline | Verizon Maryland |
| (301)528- | Landline | Verizon Maryland |
| (301)529- | Wireless | New Cingular Wireless Pcs |
| (301)530- | Landline | Verizon Maryland |
| (301)531- | Landline | Starpower Communications |
| (301)532- | Landline | Omnipoint Communications Cap Operations |
| (301)533- | Landline | Verizon Maryland |
| (301)534- | Landline | Ymax Communications |
| (301)535- | Wireless | New Cingular Wireless Pcs |
| (301)536- | Wireless | Sprint Spectrum |
| (301)537- | Wireless | Sprint Spectrum |
| (301)538- | Wireless | New Cingular Wireless Pcs |
| (301)539- | Landline | Teleport Communications America |
| (301)540- | Landline | Verizon Maryland |
| (301)541- | Landline | Teleport Communications America |
| (301)542- | Landline | Teleport Communications America |
| (301)543- | Landline | Teleport Communications America |
| (301)544- | Landline | Verizon Maryland |
| (301)545- | Landline | Verizon Maryland |
| (301)546- | Landline | Verizon Maryland |
| (301)547- | Landline | Teleport Communications America |
| (301)548- | Landline | Verizon Maryland |
| (301)549- | Landline | Verizon Maryland |
| (301)550- | Wireless | New Cingular Wireless Pcs |
| (301)551- | Landline | Baltimore-Washington Telephone (Bwt) |
| (301)552- | Landline | Verizon Maryland |
| (301)553- | Wireless | Usa Mobility Wireless |
| (301)554- | Wireless | Usa Mobility Wireless |
| (301)556- | Landline | Teleport Communications America |
| (301)557- | Landline | Level 3 Communications |
| (301)558- | Wireless | Usa Mobility Wireless |
| (301)559- | Landline | Verizon Maryland |
| (301)560- | Landline | Paetec Communications |
| (301)561- | Landline | Baltimore-Washington Telephone (Bwt) |
| (301)562- | Landline | Verizon Maryland |
| (301)563- | Landline | Verizon Maryland |
| (301)564- | Landline | Verizon Maryland |
| (301)565- | Landline | Verizon Maryland |
| (301)566- | Landline | Verizon Maryland |
| (301)567- | Landline | Verizon Maryland |
| (301)568- | Landline | Verizon Maryland |
| (301)569- | Wireless | Verizon Wireless |
| (301)570- | Landline | Verizon Maryland |
| (301)571- | Landline | Verizon Maryland |
| (301)572- | Landline | Verizon Maryland |
| (301)573- | Wireless | Sprint Spectrum |
| (301)574- | Landline | Verizon Maryland |
| (301)575- | Landline | Us Lec Of Maryland |
| (301)576- | Landline | Paetec Communications |
| (301)577- | Landline | Verizon Maryland |
| (301)578- | Landline | Verizon Maryland |
| (301)579- | Landline | Verizon Maryland |
| (301)580- | Wireless | Verizon Wireless |
| (301)581- | Landline | Verizon Maryland |
| (301)582- | Landline | Verizon Maryland |
| (301)583- | Landline | Verizon Maryland |
| (301)584- | Landline | Baltimore-Washington Telephone (Bwt) |
| (301)585- | Landline | Verizon Maryland |
| (301)586- | Landline | Verizon Maryland |
| (301)587- | Landline | Verizon Maryland |
| (301)588- | Landline | Verizon Maryland |
| (301)589- | Landline | Verizon Maryland |
| (301)590- | Landline | Verizon Maryland |
| (301)591- | Landline | Paetec Communications |
| (301)592- | Landline | Verizon Maryland |
| (301)593- | Landline | Verizon Maryland |
| (301)594- | Landline | Verizon Maryland |
| (301)595- | Landline | Verizon Maryland |
| (301)596- | Landline | Verizon Maryland |
| (301)597- | Wireless | New Cingular Wireless Pcs |
| (301)598- | Landline | Verizon Maryland |
| (301)599- | Landline | Verizon Maryland |
| (301)600- | Landline | Verizon Maryland |
| (301)601- | Landline | Verizon Maryland |
| (301)602- | Wireless | Verizon Wireless |
| (301)603- | Landline | Verizon Maryland |
| (301)604- | Landline | Verizon Maryland |
| (301)605- | Landline | Verizon Maryland |
| (301)606- | Wireless | Verizon Wireless |
| (301)607- | Landline | Verizon Maryland |
| (301)608- | Landline | Verizon Maryland |
| (301)609- | Landline | Verizon Maryland |
| (301)610- | Landline | Verizon Maryland |
| (301)612- | Landline | Teleport Communications America |
| (301)613- | Wireless | Sprint Spectrum |
| (301)614- | Landline | Verizon Maryland |
| (301)615- | Landline | Bandwidth.Com Clec |
| (301)616- | Landline | United States Cel Md |
| (301)617- | Landline | Verizon Maryland |
| (301)618- | Landline | Verizon Maryland |
| (301)619- | Landline | Verizon Maryland |
| (301)620- | Landline | Verizon Maryland |
| (301)621- | Landline | Verizon Maryland |
| (301)622- | Landline | Verizon Maryland |
| (301)623- | Landline | Teleport Communications America |
| (301)624- | Landline | Verizon Maryland |
| (301)625- | Landline | Verizon Maryland |
| (301)626- | Landline | Verizon Maryland |
| (301)627- | Landline | Verizon Maryland |
| (301)628- | Landline | Teleport Communications America |
| (301)629- | Landline | Verizon Maryland |
| (301)630- | Landline | Verizon Maryland |
| (301)631- | Landline | Verizon Maryland |
| (301)632- | Landline | Verizon Maryland |
| (301)633- | Wireless | New Cingular Wireless Pcs |
| (301)634- | Landline | Teleport Communications America |
| (301)635- | Landline | Bandwidth.Com Clec |
| (301)636- | Landline | Verizon Maryland |
| (301)637- | Landline | Level 3 Communications |
| (301)638- | Landline | Verizon Maryland |
| (301)639- | Wireless | Verizon Wireless |
| (301)640- | Landline | Verizon Maryland |
| (301)641- | Wireless | Verizon Wireless |
| (301)642- | Wireless | New Cingular Wireless Pcs |
| (301)643- | Wireless | Verizon Wireless |
| (301)644- | Landline | Verizon Maryland |
| (301)645- | Landline | Verizon Maryland |
| (301)646- | Wireless | New Cingular Wireless Pcs |
| (301)647- | Landline | American Messaging Services |
| (301)648- | Wireless | New Cingular Wireless Pcs |
| (301)649- | Landline | Verizon Maryland |
| (301)650- | Landline | Verizon Maryland |
| (301)651- | Wireless | Verizon Wireless |
| (301)652- | Landline | Verizon Maryland |
| (301)653- | Wireless | New Cingular Wireless Pcs |
| (301)654- | Landline | Verizon Maryland |
| (301)655- | Wireless | New Cingular Wireless Pcs |
| (301)656- | Landline | Verizon Maryland |
| (301)657- | Landline | Verizon Maryland |
| (301)658- | Landline | Teleport Communications America |
| (301)659- | Wireless | New Cingular Wireless Pcs |
| (301)660- | Wireless | New Cingular Wireless Pcs |
| (301)661- | Wireless | New Cingular Wireless Pcs |
| (301)662- | Landline | Verizon Maryland |
| (301)663- | Landline | Verizon Maryland |
| (301)664- | Landline | Verizon Maryland |
| (301)665- | Landline | Verizon Maryland |
| (301)666- | Landline | Teleport Communications America |
| (301)667- | Wireless | New Cingular Wireless Pcs |
| (301)668- | Landline | Verizon Maryland |
| (301)669- | Landline | Verizon Maryland |
| (301)670- | Landline | Verizon Maryland |
| (301)671- | Landline | Bandwidth.Com Clec |
| (301)672- | Wireless | Sprint Spectrum |
| (301)673- | Wireless | New Cingular Wireless Pcs |
| (301)674- | Wireless | Sprint Spectrum |
| (301)675- | Landline | Omnipoint Communications Cap Operations |
| (301)676- | Wireless | New Cingular Wireless Pcs |
| (301)677- | Landline | Teleport Communications America |
| (301)678- | Landline | Verizon Maryland |
| (301)679- | Landline | Teleport Communications America |
| (301)680- | Landline | Verizon Maryland |
| (301)681- | Landline | Verizon Maryland |
| (301)682- | Landline | Verizon Maryland |
| (301)683- | Landline | Teleport Communications America |
| (301)684- | Landline | Teleport Communications America |
| (301)685- | Landline | Teleport Communications America |
| (301)686- | Landline | Verizon Maryland |
| (301)687- | Landline | Verizon Maryland |
| (301)688- | Landline | Verizon Maryland |
| (301)689- | Landline | Verizon Maryland |
| (301)690- | Landline | Idt America |
| (301)691- | Landline | Teleport Communications America |
| (301)692- | Landline | Teleport Communications America |
| (301)693- | Landline | Omnipoint Communications Cap Operations |
| (301)694- | Landline | Verizon Maryland |
| (301)695- | Landline | Verizon Maryland |
| (301)696- | Landline | Verizon Maryland |
| (301)697- | Wireless | New Cingular Wireless Pcs |
| (301)698- | Landline | Verizon Maryland |
| (301)699- | Landline | Verizon Maryland |
| (301)701- | Landline | Bandwidth.Com Clec |
| (301)702- | Landline | Verizon Maryland |
| (301)703- | Landline | Level 3 Communications |
| (301)704- | Wireless | Verizon Wireless |
| (301)705- | Landline | Verizon Maryland |
| (301)706- | Wireless | Verizon Wireless |
| (301)707- | Landline | United States Cel Md |
| (301)708- | Wireless | Verizon Wireless |
| (301)709- | Wireless | Csc Wireless |
| (301)710- | Landline | Level 3 Communications |
| (301)712- | Landline | Mcimetro Access Transmission Services |
| (301)713- | Landline | Verizon Maryland |
| (301)714- | Landline | Verizon Maryland |
| (301)715- | Landline | Teleport Communications America |
| (301)716- | Landline | Verizon Maryland |
| (301)717- | Wireless | Verizon Wireless |
| (301)718- | Landline | Verizon Maryland |
| (301)719- | Landline | Teleport Communications America |
| (301)720- | Landline | Teleport Communications America |
| (301)721- | Landline | Verizon Maryland |
| (301)722- | Landline | Verizon Maryland |
| (301)723- | Landline | Verizon Maryland |
| (301)724- | Landline | Verizon Maryland |
| (301)725- | Landline | Verizon Maryland |
| (301)726- | Landline | Mcimetro Access Transmission Services |
| (301)727- | Landline | Baltimore-Washington Telephone (Bwt) |
| (301)728- | Landline | Omnipoint Communications Cap Operations |
| (301)729- | Landline | Verizon Maryland |
| (301)730- | Wireless | New Cingular Wireless Pcs |
| (301)731- | Landline | Verizon Maryland |
| (301)732- | Landline | Metropcs |
| (301)733- | Landline | Verizon Maryland |
| (301)734- | Landline | Verizon Maryland |
| (301)735- | Landline | Verizon Maryland |
| (301)736- | Landline | Verizon Maryland |
| (301)737- | Landline | Verizon Maryland |
| (301)738- | Landline | Verizon Maryland |
| (301)739- | Landline | Verizon Maryland |
| (301)740- | Landline | Verizon Maryland |
| (301)741- | Landline | Level 3 Communications |
| (301)742- | Wireless | New Cingular Wireless Pcs |
| (301)743- | Landline | Verizon Maryland |
| (301)744- | Landline | Verizon Maryland |
| (301)745- | Landline | Verizon Maryland |
| (301)746- | Landline | Verizon Maryland |
| (301)747- | Landline | Teleport Communications America |
| (301)748- | Wireless | Sprint Spectrum |
| (301)749- | Landline | Verizon Maryland |
| (301)750- | Landline | Core Communications |
| (301)751- | Wireless | Verizon Wireless |
| (301)752- | Wireless | Verizon Wireless |
| (301)753- | Landline | Verizon Maryland |
| (301)754- | Landline | Verizon Maryland |
| (301)755- | Landline | Mcimetro Access Transmission Services |
| (301)756- | Landline | Level 3 Telecom Of Maryland |
| (301)757- | Landline | Verizon Maryland |
| (301)758- | Wireless | Verizon Wireless |
| (301)759- | Landline | Verizon Maryland |
| (301)760- | Landline | Level 3 Communications |
| (301)761- | Landline | Level 3 Communications |
| (301)762- | Landline | Verizon Maryland |
| (301)763- | Landline | Verizon Maryland |
| (301)764- | Landline | Verizon Maryland |
| (301)765- | Landline | Verizon Maryland |
| (301)766- | Landline | Verizon Maryland |
| (301)767- | Landline | Verizon Maryland |
| (301)768- | Landline | Level 3 Communications |
| (301)769- | Landline | Verizon Maryland |
| (301)770- | Landline | Verizon Maryland |
| (301)771- | Landline | Verizon Maryland |
| (301)772- | Landline | Verizon Maryland |
| (301)773- | Landline | Verizon Maryland |
| (301)774- | Landline | Verizon Maryland |
| (301)775- | Wireless | Verizon Wireless |
| (301)776- | Landline | Verizon Maryland |
| (301)777- | Landline | Verizon Maryland |
| (301)778- | Landline | Mcimetro Access Transmission Services |
| (301)779- | Landline | Verizon Maryland |
| (301)780- | Landline | Verizon Maryland |
| (301)781- | Landline | Onvoy Spectrum |
| (301)782- | Landline | Verizon Maryland |
| (301)783- | Landline | Bandwidth.Com Clec |
| (301)784- | Landline | Verizon Maryland |
| (301)785- | Wireless | Verizon Wireless |
| (301)786- | Landline | Verizon Maryland |
| (301)787- | Wireless | Verizon Wireless |
| (301)788- | Wireless | Verizon Wireless |
| (301)789- | Landline | Core Communications |
| (301)790- | Landline | Verizon Maryland |
| (301)791- | Landline | Verizon Maryland |
| (301)792- | Landline | Omnipoint Communications Cap Operations |
| (301)793- | Landline | Omnipoint Communications Cap Operations |
| (301)794- | Landline | Verizon Maryland |
| (301)795- | Landline | Mcimetro Access Transmission Services |
| (301)796- | Landline | Verizon Maryland |
| (301)797- | Landline | Verizon Maryland |
| (301)798- | Landline | Verizon Maryland |
| (301)799- | Landline | Core Communications |
| (301)800- | Wireless | Sprint Spectrum |
| (301)801- | Wireless | Verizon Wireless |
| (301)802- | Wireless | Verizon Wireless |
| (301)803- | Landline | Verizon Maryland |
| (301)804- | Landline | Mcimetro Access Transmission Services |
| (301)805- | Landline | Verizon Maryland |
| (301)806- | Wireless | Sprint Spectrum |
| (301)807- | Wireless | Verizon Wireless |
| (301)808- | Landline | Verizon Maryland |
| (301)809- | Landline | Verizon Maryland |
| (301)810- | Landline | Onvoy Spectrum |
| (301)812- | Landline | Verizon Maryland |
| (301)813- | Landline | Baltimore-Washington Telephone (Bwt) |
| (301)814- | Wireless | New Cingular Wireless Pcs |
| (301)815- | Landline | Verizon Maryland |
| (301)816- | Landline | Verizon Maryland |
| (301)817- | Landline | Verizon Maryland |
| (301)818- | Landline | Bandwidth.Com Clec |
| (301)819- | Landline | Verizon Maryland |
| (301)820- | Landline | Teleport Communications America |
| (301)821- | Landline | Teleport Communications America |
| (301)822- | Landline | Mcimetro Access Transmission Services |
| (301)823- | Landline | Teleport Communications America |
| (301)824- | Landline | Verizon Maryland |
| (301)825- | Landline | At&T |
| (301)826- | Landline | Verizon Maryland |
| (301)827- | Landline | Verizon Maryland |
| (301)828- | Landline | Teleport Communications America |
| (301)829- | Landline | Verizon Maryland |
| (301)830- | Landline | Teleport Communications America |
| (301)831- | Landline | Verizon Maryland |
| (301)832- | Landline | Teleport Communications America |
| (301)833- | Landline | Teleport Communications America |
| (301)834- | Landline | Verizon Maryland |
| (301)835- | Landline | Vonage America |
| (301)836- | Landline | Verizon Maryland |
| (301)837- | Landline | Mcimetro Access Transmission Services |
| (301)838- | Landline | Verizon Maryland |
| (301)839- | Landline | Verizon Maryland |
| (301)840- | Landline | Verizon Maryland |
| (301)841- | Landline | Mcimetro Access Transmission Services |
| (301)842- | Landline | Verizon Maryland |
| (301)843- | Landline | Verizon Maryland |
| (301)844- | Wireless | Sprint Spectrum |
| (301)845- | Landline | Verizon Maryland |
| (301)846- | Landline | Verizon Maryland |
| (301)847- | Landline | Verizon Maryland |
| (301)848- | Wireless | Verizon Wireless |
| (301)849- | Landline | Bandwidth.Com Clec |
| (301)850- | Landline | Level 3 Communications |
| (301)851- | Landline | Verizon Maryland |
| (301)852- | Landline | Verizon Maryland |
| (301)853- | Landline | Verizon Maryland |
| (301)854- | Landline | Verizon Maryland |
| (301)855- | Landline | Verizon Maryland |
| (301)856- | Landline | Verizon Maryland |
| (301)857- | Landline | Core Communications |
| (301)858- | Landline | Verizon Maryland |
| (301)859- | Landline | Level 3 Communications |
| (301)860- | Landline | Verizon Maryland |
| (301)861- | Landline | Level 3 Communications |
| (301)862- | Landline | Verizon Maryland |
| (301)863- | Landline | Verizon Maryland |
| (301)864- | Landline | Verizon Maryland |
| (301)865- | Landline | Verizon Maryland |
| (301)866- | Landline | Verizon Maryland |
| (301)867- | Landline | Mcimetro Access Transmission Services |
| (301)868- | Landline | Verizon Maryland |
| (301)869- | Landline | Verizon Maryland |
| (301)870- | Landline | Verizon Maryland |
| (301)871- | Landline | Verizon Maryland |
| (301)872- | Landline | Verizon Maryland |
| (301)873- | Wireless | Verizon Wireless |
| (301)874- | Landline | Verizon Maryland |
| (301)875- | Wireless | Verizon Wireless |
| (301)876- | Landline | Level 3 Communications |
| (301)877- | Landline | Verizon Maryland |
| (301)878- | Landline | Mcimetro Access Transmission Services |
| (301)879- | Landline | Verizon Maryland |
| (301)880- | Landline | Level 3 Communications |
| (301)881- | Landline | Verizon Maryland |
| (301)882- | Landline | Core Communications |
| (301)883- | Landline | Verizon Maryland |
| (301)884- | Landline | Verizon Maryland |
| (301)885- | Landline | Verizon Maryland |
| (301)886- | Landline | Verizon Maryland |
| (301)887- | Landline | Verizon Maryland |
| (301)888- | Landline | Verizon Maryland |
| (301)889- | Landline | Verizon Maryland |
| (301)890- | Landline | Verizon Maryland |
| (301)891- | Landline | Verizon Maryland |
| (301)892- | Landline | Verizon Maryland |
| (301)893- | Landline | Verizon Maryland |
| (301)894- | Landline | Verizon Maryland |
| (301)895- | Landline | Verizon Maryland |
| (301)896- | Landline | Verizon Maryland |
| (301)897- | Landline | Verizon Maryland |
| (301)898- | Landline | Verizon Maryland |
| (301)899- | Landline | Verizon Maryland |
| (301)900- | Landline | Onvoy |
| (301)901- | Landline | Verizon Maryland |
| (301)902- | Landline | Verizon Maryland |
| (301)903- | Landline | Verizon Maryland |
| (301)904- | Wireless | Verizon Wireless |
| (301)905- | Landline | Verizon Maryland |
| (301)906- | Wireless | New Cingular Wireless Pcs |
| (301)907- | Landline | Verizon Maryland |
| (301)908- | Wireless | Verizon Wireless |
| (301)909- | Landline | Mcimetro Access Transmission Services |
| (301)910- | Wireless | New Cingular Wireless Pcs |
| (301)912- | Landline | Verizon Maryland |
| (301)913- | Landline | Verizon Maryland |
| (301)914- | Landline | Procom |
| (301)915- | Landline | Starpower Communications |
| (301)916- | Landline | Verizon Maryland |
| (301)917- | Landline | Starpower Communications |
| (301)918- | Landline | Verizon Maryland |
| (301)919- | Wireless | New Cingular Wireless Pcs |
| (301)920- | Landline | Starpower Communications |
| (301)921- | Landline | Verizon Maryland |
| (301)922- | Wireless | Verizon Wireless |
| (301)923- | Landline | Bandwidth.Com Clec |
| (301)924- | Landline | Verizon Maryland |
| (301)925- | Landline | Verizon Maryland |
| (301)926- | Landline | Verizon Maryland |
| (301)927- | Landline | Verizon Maryland |
| (301)928- | Wireless | Verizon Wireless |
| (301)929- | Landline | Verizon Maryland |
| (301)930- | Landline | Verizon Maryland |
| (301)931- | Landline | Verizon Maryland |
| (301)932- | Landline | Verizon Maryland |
| (301)933- | Landline | Verizon Maryland |
| (301)934- | Landline | Verizon Maryland |
| (301)935- | Landline | Verizon Maryland |
| (301)936- | Landline | Telnyx |
| (301)937- | Landline | Verizon Maryland |
| (301)938- | Wireless | Verizon Wireless |
| (301)939- | Landline | Verizon Maryland |
| (301)940- | Landline | Verizon Maryland |
| (301)941- | Landline | Verizon Maryland |
| (301)942- | Landline | Verizon Maryland |
| (301)943- | Wireless | Verizon Wireless |
| (301)944- | Landline | Mcimetro Access Transmission Services |
| (301)945- | Landline | Mcimetro Access Transmission Services |
| (301)946- | Landline | Verizon Maryland |
| (301)947- | Landline | Verizon Maryland |
| (301)948- | Landline | Verizon Maryland |
| (301)949- | Landline | Verizon Maryland |
| (301)951- | Landline | Verizon Maryland |
| (301)952- | Landline | Verizon Maryland |
| (301)953- | Landline | Verizon Maryland |
| (301)955- | Landline | Mcimetro Access Transmission Services |
| (301)956- | Landline | Verizon Maryland |
| (301)957- | Landline | Mcimetro Access Transmission Services |
| (301)960- | Landline | Mcimetro Access Transmission Services |
| (301)961- | Landline | Verizon Maryland |
| (301)962- | Landline | Verizon Maryland |
| (301)963- | Landline | Verizon Maryland |
| (301)964- | Wireless | New Cingular Wireless Pcs |
| (301)965- | Landline | Mcimetro Access Transmission Services |
| (301)966- | Landline | Mcimetro Access Transmission Services |
| (301)967- | Landline | Verizon Maryland |
| (301)968- | Landline | Mcimetro Access Transmission Services |
| (301)969- | Landline | Comcast Ip Phone |
| (301)970- | Landline | Verizon Maryland |
| (301)971- | Landline | Starpower Communications |
| (301)972- | Landline | Verizon Maryland |
| (301)973- | Landline | Bandwidth.Com Clec |
| (301)974- | Landline | Starpower Communications |
| (301)975- | Landline | Verizon Maryland |
| (301)977- | Landline | Verizon Maryland |
| (301)978- | Landline | Verizon Maryland |
| (301)979- | Landline | Verizon Maryland |
| (301)980- | Wireless | Verizon Wireless |
| (301)981- | Landline | Level 3 Telecom Of Maryland |
| (301)982- | Landline | Verizon Maryland |
| (301)983- | Landline | Verizon Maryland |
| (301)984- | Landline | Verizon Maryland |
| (301)985- | Landline | Verizon Maryland |
| (301)986- | Landline | Verizon Maryland |
| (301)987- | Landline | Verizon Maryland |
| (301)988- | Landline | United States Cel Md |
| (301)989- | Landline | Verizon Maryland |
| (301)990- | Landline | Verizon Maryland |
| (301)991- | Wireless | Sprint Spectrum |
| (301)992- | Wireless | Sprint Spectrum |
| (301)993- | Landline | Verizon Maryland |
| (301)994- | Landline | Verizon Maryland |
| (301)995- | Landline | Verizon Maryland |
| (301)996- | Wireless | Sprint Spectrum |
| (301)997- | Landline | Verizon Maryland |
| (301)998- | Landline | Verizon Maryland |
| No prefixes match “”. | ||
Frequently Asked Questions about the 301 Area Code
Who called me from a 301 number?
A 301 number is assigned to Germantown, Maryland, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 301 code to look nearby, so a 301 number doesn't prove the caller is local. Recently, 1,351 unwanted-call complaints were reported to the FTC for numbers showing the 301 code (65% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 301 a scam area code?
No area code is a scam on its own. 301 is a normal, officially assigned code for Germantown, Maryland. Spam callers spoof local codes to raise the odds you answer, so 301 on your caller ID says nothing about who is really calling. Recently, 1,351 unwanted-call complaints were reported to the FTC for numbers showing the 301 code (65% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 301 area code?
Repeated calls from different 301 numbers are usually spoofing: a robocaller rotates through 301 numbers so each call looks local and slips past simple blocks. Recently, 1,351 unwanted-call complaints were reported to the FTC for numbers showing the 301 code (65% flagged as robocalls). Blocking one number rarely helps; voicemail screening, your carrier spam filter, and the Do Not Call Registry work better.
Should I answer an unknown 301 number?
If you aren't expecting a 301 call, let it ring to voicemail. Legitimate callers leave a message, most robocallers hang up when no one picks up, and answering can mark your number as active and bring more calls.
How do I block calls from the 301 area code?
Block a single 301 number from your recent-calls list (iPhone: tap the number, then Block this Caller; Android: tap the number, then Block or report spam). To cut the volume, turn on Silence Unknown Callers on iPhone or spam protection on Android, enable spam filtering from your carrier, and register at DoNotCall.gov. Blocking the entire 301 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 301?
Area code 301 covers Germantown and the surrounding area in Maryland, spanning 314 cities with about 2,956,782 residents. It shares its area with overlay codes 227, 240.
When did area code 301 go into service?
Area code 301 went into service on January 1, 1947. Overlay codes 227, 240 now share its territory.
Is 301 a real area code?
Yes. 301 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Germantown, Maryland. A real code can still show up on spoofed spam calls, so treat unknown 301 calls with normal caution.
What timezone is the 301 area code in?
The 301 area code is in the Eastern Time (ET). Because a number can be kept when someone moves or switches to VoIP, a specific 301 caller may not be in that zone.
How do I call a 301 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 301 and the seven-digit number. From a mobile phone you can usually just enter +1 301 followed by the number and let the phone add the exit code for you.