815 Area CodeRockford, IL
Area code 815 covers Rockford and nearby communities in Illinois, in the Central Time (CT) zone, home to about 1,697,555 people across 275 cities. It overlays 779, so the same region uses both and every local call needs all ten digits.
Where is area code 815?
Area code 815 serves part of Rockford, IL and the surrounding areas. It has a single overlay (779) that serves the same area.
Overview of the 815 Area Code
What is the 815 area code?
The 815 area code serves Rockford, Illinois, alongside other established area codes. When you see a 815 number, it indicates a local number within this geographic area.
Why was area code 815 created?
Area code 815 has been in service since January 1, 1947. The same territory is now also served by the overlay code 779.
Geographic Coverage of the 815 Area Code
The 815 area code serves Rockford and surrounding areas in Illinois. It operates within the Central Time (CT) time zone. It complements the coverage of area code 779. This area code covers several key cities, including:
- Joliet
- Rockford
- Bolingbrook
- Tinley Park
- Plainfield
- Crystal Lake
Got a call from an 815 number? It came from Rockford, IL. Since 815 overlays with 779, every local call in the region needs all ten digits to land on the right line. Of the listed cities' population, Rockford accounts for about 9.8%; the rest is split across 274 smaller cities.
Rockford Area Codes Overview
Rockford is served by multiple area codes, reflecting its telecommunications needs. The 815 area code operates alongside 779. Here are the area codes serving this region:
The introduction of the 815 area code helped prevent number exhaustion, ensuring a continuous supply of phone numbers across the geographic area.
What cities does area code 815 cover?
| City | State | Population | Population in 815 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Joliet | IL | 151,837 | 151,837 | 9.8% | 100.0% |
| Rockford | IL | 147,486 | 147,486 | 9.5% | 100.0% |
| Bolingbrook | IL | 74,756 | 6,468 | 4.8% | 8.7% |
| Tinley Park | IL | 54,856 | 0 | 3.6% | 0.0% |
| Plainfield | IL | 48,881 | 41,896 | 3.2% | 85.7% |
| Crystal Lake | IL | 41,513 | 35,874 | 2.7% | 86.4% |
| Romeoville | IL | 41,177 | 36,567 | 2.7% | 88.8% |
| DeKalb | IL | 40,491 | 40,491 | 2.6% | 100.0% |
| McHenry | IL | 28,825 | 28,825 | 1.9% | 100.0% |
| New Lenox | IL | 28,480 | 28,480 | 1.8% | 100.0% |
| Lockport | IL | 26,915 | 26,915 | 1.7% | 100.0% |
| Woodstock | IL | 25,892 | 25,892 | 1.7% | 100.0% |
| Belvidere | IL | 25,325 | 25,325 | 1.6% | 100.0% |
| Homer Glen | IL | 24,852 | 0 | 1.6% | 0.0% |
| Loves Park | IL | 23,636 | 23,636 | 1.5% | 100.0% |
| Kankakee | IL | 23,535 | 23,535 | 1.5% | 100.0% |
| Freeport | IL | 23,140 | 23,140 | 1.5% | 100.0% |
| Machesney Park | IL | 22,839 | 22,839 | 1.5% | 100.0% |
| Frankfort | IL | 21,160 | 21,160 | 1.4% | 100.0% |
| Crest Hill | IL | 20,223 | 20,223 | 1.3% | 100.0% |
| Mokena | IL | 19,915 | 0 | 1.3% | 0.0% |
| Sycamore | IL | 18,968 | 18,968 | 1.2% | 100.0% |
| Ottawa | IL | 18,775 | 18,775 | 1.2% | 100.0% |
| Shorewood | IL | 18,522 | 18,522 | 1.2% | 100.0% |
| Bourbonnais | IL | 18,083 | 18,083 | 1.2% | 100.0% |
| Bradley | IL | 15,298 | 15,298 | 1.0% | 100.0% |
| Dixon | IL | 15,156 | 15,156 | 1.0% | 100.0% |
| Morris | IL | 14,587 | 14,587 | 0.9% | 100.0% |
| Sterling | IL | 14,535 | 14,535 | 0.9% | 100.0% |
| Channahon | IL | 14,392 | 14,392 | 0.9% | 100.0% |
| Minooka | IL | 12,907 | 12,907 | 0.8% | 100.0% |
| Streator | IL | 12,295 | 12,295 | 0.8% | 100.0% |
| Pontiac | IL | 11,054 | 11,054 | 0.7% | 100.0% |
| Roscoe | IL | 10,981 | 10,981 | 0.7% | 100.0% |
| Fox Lake | IL | 10,925 | 0 | 0.7% | 0.0% |
| Manhattan | IL | 10,772 | 10,772 | 0.7% | 100.0% |
| Peru | IL | 9,793 | 9,793 | 0.6% | 100.0% |
| Rochelle | IL | 9,510 | 9,510 | 0.6% | 100.0% |
| LaSalle | IL | 9,424 | 9,424 | 0.6% | 100.0% |
| Harvard | IL | 9,408 | 9,408 | 0.6% | 100.0% |
| Frankfort Square | IL | 9,276 | 9,276 | 0.6% | 100.0% |
| Manteno | IL | 9,241 | 9,241 | 0.6% | 100.0% |
| Rock Falls | IL | 8,614 | 8,614 | 0.6% | 100.0% |
| Island Lake | IL | 8,066 | 0 | 0.5% | 0.0% |
| South Beloit | IL | 7,983 | 7,983 | 0.5% | 100.0% |
| Rockton | IL | 7,861 | 7,861 | 0.5% | 100.0% |
| Marengo | IL | 7,699 | 7,699 | 0.5% | 100.0% |
| Princeton | IL | 7,667 | 7,667 | 0.5% | 100.0% |
| Volo | IL | 7,361 | 0 | 0.5% | 0.0% |
| Sandwich | IL | 7,299 | 7,299 | 0.5% | 100.0% |
| Mendota | IL | 6,922 | 6,922 | 0.5% | 100.0% |
| Lakemoor | IL | 6,451 | 0 | 0.4% | 0.0% |
| Johnsburg | IL | 6,428 | 6,428 | 0.4% | 100.0% |
| Braidwood | IL | 6,245 | 6,245 | 0.4% | 100.0% |
| Coal City | IL | 5,810 | 5,810 | 0.4% | 100.0% |
| Wilmington | IL | 5,629 | 5,629 | 0.4% | 100.0% |
| Spring Grove | IL | 5,554 | 5,554 | 0.4% | 100.0% |
| Genoa | IL | 5,514 | 5,514 | 0.4% | 100.0% |
| Spring Valley | IL | 5,404 | 5,404 | 0.4% | 100.0% |
| Wonder Lake | IL | 5,296 | 5,296 | 0.3% | 100.0% |
| Poplar Grove | IL | 5,165 | 5,165 | 0.3% | 100.0% |
| Marseilles | IL | 4,779 | 4,779 | 0.3% | 100.0% |
| Lake Holiday | IL | 4,761 | 4,761 | 0.3% | 100.0% |
| Cortland | IL | 4,592 | 4,592 | 0.3% | 100.0% |
| Watseka | IL | 4,495 | 4,495 | 0.3% | 100.0% |
| Lakewood | IL | 4,287 | 4,287 | 0.3% | 100.0% |
| Dwight | IL | 4,032 | 4,032 | 0.3% | 100.0% |
| Morrison | IL | 3,988 | 3,988 | 0.3% | 100.0% |
| Byron | IL | 3,764 | 3,764 | 0.2% | 100.0% |
| Oglesby | IL | 3,626 | 3,626 | 0.2% | 100.0% |
| Fulton | IL | 3,581 | 3,581 | 0.2% | 100.0% |
| Fairbury | IL | 3,571 | 3,571 | 0.2% | 100.0% |
| Oregon | IL | 3,570 | 3,570 | 0.2% | 100.0% |
| Pistakee Highlands | IL | 3,454 | 0 | 0.2% | 0.0% |
| Ingalls Park | IL | 3,314 | 3,314 | 0.2% | 100.0% |
| Galena | IL | 3,207 | 3,207 | 0.2% | 100.0% |
| Momence | IL | 3,169 | 3,169 | 0.2% | 100.0% |
| Winnebago | IL | 2,907 | 2,907 | 0.2% | 100.0% |
| Cherry Valley | IL | 2,888 | 2,888 | 0.2% | 100.0% |
| Mount Morris | IL | 2,792 | 2,792 | 0.2% | 100.0% |
| Savanna | IL | 2,713 | 2,713 | 0.2% | 100.0% |
| Diamond | IL | 2,702 | 2,702 | 0.2% | 100.0% |
| Lena | IL | 2,666 | 2,666 | 0.2% | 100.0% |
| Preston Heights | IL | 2,575 | 2,575 | 0.2% | 100.0% |
| Davis Junction | IL | 2,534 | 2,534 | 0.2% | 100.0% |
| Fairmont | IL | 2,459 | 2,459 | 0.2% | 100.0% |
| Sheridan | IL | 2,413 | 2,413 | 0.2% | 100.0% |
| Seneca | IL | 2,310 | 2,310 | 0.2% | 100.0% |
| Elwood | IL | 2,248 | 2,248 | 0.2% | 100.0% |
| Polo | IL | 2,238 | 2,238 | 0.2% | 100.0% |
| Amboy | IL | 2,224 | 2,224 | 0.1% | 100.0% |
| Richmond | IL | 2,123 | 2,123 | 0.1% | 100.0% |
| Pecatonica | IL | 2,058 | 2,058 | 0.1% | 100.0% |
| Lake Summerset | IL | 2,048 | 2,048 | 0.1% | 100.0% |
| Rockdale | IL | 1,980 | 1,980 | 0.1% | 100.0% |
| Hinckley | IL | 1,976 | 1,976 | 0.1% | 100.0% |
| Prairie Grove | IL | 1,951 | 1,951 | 0.1% | 100.0% |
| Prophetstown | IL | 1,906 | 1,906 | 0.1% | 100.0% |
| Crystal Lawns | IL | 1,872 | 1,872 | 0.1% | 100.0% |
| Somonauk | IL | 1,761 | 1,761 | 0.1% | 100.0% |
| Chenoa | IL | 1,699 | 1,699 | 0.1% | 100.0% |
| Gilman | IL | 1,674 | 1,674 | 0.1% | 100.0% |
| Stockton | IL | 1,668 | 1,668 | 0.1% | 100.0% |
| Kirkland | IL | 1,621 | 1,621 | 0.1% | 100.0% |
| Earlville | IL | 1,598 | 1,598 | 0.1% | 100.0% |
| Thomson | IL | 1,595 | 1,595 | 0.1% | 100.0% |
| De Pue | IL | 1,573 | 1,573 | 0.1% | 100.0% |
| Waterman | IL | 1,543 | 1,543 | 0.1% | 100.0% |
| Limestone | IL | 1,524 | 1,524 | 0.1% | 100.0% |
| Herscher | IL | 1,493 | 1,493 | 0.1% | 100.0% |
| Maple Park | IL | 1,482 | 1,482 | 0.1% | 100.0% |
| Lanark | IL | 1,463 | 1,463 | 0.1% | 100.0% |
| East Dubuque | IL | 1,457 | 1,457 | 0.1% | 100.0% |
| Mount Carroll | IL | 1,433 | 1,433 | 0.1% | 100.0% |
| Forreston | IL | 1,403 | 1,403 | 0.1% | 100.0% |
| Capron | IL | 1,402 | 1,402 | 0.1% | 100.0% |
| Hebron | IL | 1,396 | 1,396 | 0.1% | 100.0% |
| Ladd | IL | 1,387 | 1,387 | 0.1% | 100.0% |
| Durand | IL | 1,383 | 1,383 | 0.1% | 100.0% |
| Gardner | IL | 1,366 | 1,366 | 0.1% | 100.0% |
| Lakewood Shores | IL | 1,347 | 1,347 | 0.1% | 100.0% |
| North Utica | IL | 1,343 | 1,343 | 0.1% | 100.0% |
| Granville | IL | 1,331 | 1,331 | 0.1% | 100.0% |
| Toluca | IL | 1,321 | 1,321 | 0.1% | 100.0% |
| Clifton | IL | 1,295 | 1,295 | 0.1% | 100.0% |
| Onarga | IL | 1,294 | 1,294 | 0.1% | 100.0% |
| Grant Park | IL | 1,282 | 1,282 | 0.1% | 100.0% |
| Warren | IL | 1,276 | 1,276 | 0.1% | 100.0% |
| Walnut | IL | 1,265 | 1,265 | 0.1% | 100.0% |
| Hillcrest | IL | 1,206 | 1,206 | 0.1% | 100.0% |
| Chatsworth | IL | 1,162 | 1,162 | 0.1% | 100.0% |
| Malta | IL | 1,137 | 1,137 | 0.1% | 100.0% |
| Bull Valley | IL | 1,136 | 1,136 | 0.1% | 100.0% |
| St. Anne | IL | 1,130 | 1,130 | 0.1% | 100.0% |
| Milford | IL | 1,111 | 1,111 | 0.1% | 100.0% |
| Kingston | IL | 1,095 | 1,095 | 0.1% | 100.0% |
| The Galena Territory | IL | 1,058 | 1,058 | 0.1% | 100.0% |
| Stillman Valley | IL | 1,052 | 1,052 | 0.1% | 100.0% |
| Flanagan | IL | 1,023 | 1,023 | 0.1% | 100.0% |
| Forrest | IL | 1,019 | 1,019 | 0.1% | 100.0% |
| Chebanse | IL | 1,011 | 1,011 | 0.1% | 100.0% |
| Milledgeville | IL | 992 | 992 | 0.1% | 100.0% |
| Odell | IL | 983 | 983 | 0.1% | 100.0% |
| Mazon | IL | 982 | 982 | 0.1% | 100.0% |
| Newark | IL | 980 | 980 | 0.1% | 100.0% |
| McCullom Lake | IL | 968 | 968 | 0.1% | 100.0% |
| Wenona | IL | 955 | 955 | 0.1% | 100.0% |
| Ashton | IL | 939 | 939 | 0.1% | 100.0% |
| Sheldon | IL | 930 | 930 | 0.1% | 100.0% |
| Leland | IL | 928 | 928 | 0.1% | 100.0% |
| Timberlane | IL | 902 | 902 | 0.1% | 100.0% |
| Franklin Grove | IL | 876 | 876 | 0.1% | 100.0% |
| Wyanet | IL | 858 | 858 | 0.1% | 100.0% |
| Essex | IL | 853 | 853 | 0.1% | 100.0% |
| Shabbona | IL | 852 | 852 | 0.1% | 100.0% |
| Shannon | IL | 841 | 841 | 0.1% | 100.0% |
| Ringwood | IL | 837 | 837 | 0.1% | 100.0% |
| Hanover | IL | 828 | 828 | 0.1% | 100.0% |
| New Milford | IL | 807 | 807 | 0.1% | 100.0% |
| Paw Paw | IL | 806 | 806 | 0.1% | 100.0% |
| Sheffield | IL | 798 | 798 | 0.1% | 100.0% |
| Cissna Park | IL | 778 | 778 | 0.1% | 100.0% |
| Pearl City | IL | 756 | 756 | 0.1% | 100.0% |
| Hennepin | IL | 747 | 747 | 0.1% | 100.0% |
| Orangeville | IL | 739 | 739 | 0.1% | 100.0% |
| Piper City | IL | 737 | 737 | 0.1% | 100.0% |
| Tonica | IL | 736 | 736 | 0.1% | 100.0% |
| Braceville | IL | 722 | 722 | 0.1% | 100.0% |
| Ashkum | IL | 716 | 716 | 0.1% | 100.0% |
| South Wilmington | IL | 715 | 715 | 0.1% | 100.0% |
| Tiskilwa | IL | 714 | 714 | 0.1% | 100.0% |
| Lost Nation | IL | 708 | 708 | 0.1% | 100.0% |
| Union | IL | 690 | 690 | 0.1% | 100.0% |
| Elizabeth | IL | 688 | 688 | 0.1% | 100.0% |
| Tampico | IL | 675 | 675 | 0.0% | 100.0% |
| La Moille | IL | 670 | 670 | 0.0% | 100.0% |
| Aroma Park | IL | 653 | 653 | 0.0% | 100.0% |
| Cedarville | IL | 645 | 645 | 0.0% | 100.0% |
| Dalzell | IL | 643 | 643 | 0.0% | 100.0% |
| Godley | IL | 634 | 634 | 0.0% | 100.0% |
| Hopkins Park | IL | 625 | 625 | 0.0% | 100.0% |
| Millington | IL | 624 | 624 | 0.0% | 100.0% |
| Creston | IL | 618 | 618 | 0.0% | 100.0% |
| Holiday Hills | IL | 606 | 606 | 0.0% | 100.0% |
| Danforth | IL | 570 | 570 | 0.0% | 100.0% |
| Davis | IL | 568 | 568 | 0.0% | 100.0% |
| Como | IL | 567 | 567 | 0.0% | 100.0% |
| Apple Canyon Lake | IL | 558 | 558 | 0.0% | 100.0% |
| Dayton | IL | 537 | 537 | 0.0% | 100.0% |
| Lyndon | IL | 529 | 529 | 0.0% | 100.0% |
| Crescent City | IL | 528 | 528 | 0.0% | 100.0% |
| Grand Ridge | IL | 508 | 508 | 0.0% | 100.0% |
| Mark | IL | 507 | 507 | 0.0% | 100.0% |
| Cullom | IL | 506 | 506 | 0.0% | 100.0% |
| Dakota | IL | 479 | 479 | 0.0% | 100.0% |
| Chadwick | IL | 476 | 476 | 0.0% | 100.0% |
| Ohio | IL | 458 | 458 | 0.0% | 100.0% |
| Sun River Terrace | IL | 450 | 450 | 0.0% | 100.0% |
| Cornell | IL | 441 | 441 | 0.0% | 100.0% |
| Lostant | IL | 430 | 430 | 0.0% | 100.0% |
| Grand Detour | IL | 429 | 429 | 0.0% | 100.0% |
| Cherry | IL | 420 | 420 | 0.0% | 100.0% |
| Leaf River | IL | 419 | 419 | 0.0% | 100.0% |
| Scales Mound | IL | 419 | 419 | 0.0% | 100.0% |
| German Valley | IL | 417 | 417 | 0.0% | 100.0% |
| Naplate | IL | 414 | 414 | 0.0% | 100.0% |
| Saunemin | IL | 406 | 406 | 0.0% | 100.0% |
| Monroe Center | IL | 406 | 406 | 0.0% | 100.0% |
| Carbon Hill | IL | 383 | 383 | 0.0% | 100.0% |
| Sublette | IL | 372 | 372 | 0.0% | 100.0% |
| Garden Prairie | IL | 352 | 352 | 0.0% | 100.0% |
| Bonfield | IL | 342 | 342 | 0.0% | 100.0% |
| Apple River | IL | 333 | 333 | 0.0% | 100.0% |
| Martinton | IL | 321 | 321 | 0.0% | 100.0% |
| Greenwood | IL | 316 | 316 | 0.0% | 100.0% |
| Seatonville | IL | 312 | 312 | 0.0% | 100.0% |
| Malden | IL | 310 | 310 | 0.0% | 100.0% |
| Ransom | IL | 309 | 309 | 0.0% | 100.0% |
| Lee | IL | 308 | 308 | 0.0% | 100.0% |
| Chemung | IL | 308 | 308 | 0.0% | 100.0% |
| Beaverville | IL | 292 | 292 | 0.0% | 100.0% |
| Manlius | IL | 290 | 290 | 0.0% | 100.0% |
| Rock City | IL | 287 | 287 | 0.0% | 100.0% |
| Millbrook | IL | 282 | 282 | 0.0% | 100.0% |
| Bureau Junction | IL | 278 | 278 | 0.0% | 100.0% |
| Lisbon | IL | 274 | 274 | 0.0% | 100.0% |
| McNabb | IL | 274 | 274 | 0.0% | 100.0% |
| Winslow | IL | 270 | 270 | 0.0% | 100.0% |
| Compton | IL | 266 | 266 | 0.0% | 100.0% |
| Cedar Point | IL | 261 | 261 | 0.0% | 100.0% |
| Rutland | IL | 255 | 255 | 0.0% | 100.0% |
| Magnolia | IL | 254 | 254 | 0.0% | 100.0% |
| Donovan | IL | 238 | 238 | 0.0% | 100.0% |
| Buckingham | IL | 238 | 238 | 0.0% | 100.0% |
| Woodland | IL | 237 | 237 | 0.0% | 100.0% |
| Cabery | IL | 233 | 233 | 0.0% | 100.0% |
| Kangley | IL | 229 | 229 | 0.0% | 100.0% |
| Steward | IL | 223 | 223 | 0.0% | 100.0% |
| Standard | IL | 222 | 222 | 0.0% | 100.0% |
| Troy Grove | IL | 222 | 222 | 0.0% | 100.0% |
| Plattville | IL | 221 | 221 | 0.0% | 100.0% |
| Sammons Point | IL | 215 | 215 | 0.0% | 100.0% |
| Verona | IL | 207 | 207 | 0.0% | 100.0% |
| Menominee | IL | 206 | 206 | 0.0% | 100.0% |
| Thawville | IL | 205 | 0 | 0.0% | 0.0% |
| Long Point | IL | 199 | 199 | 0.0% | 100.0% |
| Reddick | IL | 195 | 195 | 0.0% | 100.0% |
| Wellington | IL | 195 | 195 | 0.0% | 100.0% |
| Caledonia | IL | 182 | 182 | 0.0% | 100.0% |
| Kempton | IL | 177 | 177 | 0.0% | 100.0% |
| Hooppole | IL | 173 | 173 | 0.0% | 100.0% |
| Arlington | IL | 165 | 165 | 0.0% | 100.0% |
| Coleta | IL | 161 | 161 | 0.0% | 100.0% |
| Dana | IL | 157 | 157 | 0.0% | 100.0% |
| Campus | IL | 140 | 140 | 0.0% | 100.0% |
| Dover | IL | 133 | 133 | 0.0% | 100.0% |
| Iroquois | IL | 131 | 131 | 0.0% | 100.0% |
| Papineau | IL | 130 | 130 | 0.0% | 100.0% |
| West Brooklyn | IL | 128 | 128 | 0.0% | 100.0% |
| Nelson | IL | 125 | 125 | 0.0% | 100.0% |
| Symerton | IL | 124 | 124 | 0.0% | 100.0% |
| Ridott | IL | 123 | 123 | 0.0% | 100.0% |
| Leonore | IL | 121 | 121 | 0.0% | 100.0% |
| Harmon | IL | 117 | 117 | 0.0% | 100.0% |
| Nora | IL | 110 | 110 | 0.0% | 100.0% |
| Strawn | IL | 102 | 102 | 0.0% | 100.0% |
| Emington | IL | 99 | 99 | 0.0% | 100.0% |
| Kinsman | IL | 87 | 87 | 0.0% | 100.0% |
| East Brooklyn | IL | 79 | 79 | 0.0% | 100.0% |
| Adeline | IL | 75 | 75 | 0.0% | 100.0% |
| New Bedford | IL | 75 | 75 | 0.0% | 100.0% |
| Irwin | IL | 67 | 67 | 0.0% | 100.0% |
| Union Hill | IL | 52 | 52 | 0.0% | 100.0% |
| Hollowayville | IL | 44 | 44 | 0.0% | 100.0% |
| Deer Grove | IL | 39 | 39 | 0.0% | 100.0% |
City population is shown in full. The share of each city inside 815 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 815 cover?
1,697,555 residents across 23 counties, counted inside the 815 boundary — a county split between codes contributes only its part.
| County | State | Population in 815 | % of area-code footprint | % of County |
|---|---|---|---|---|
| Will County | IL | 451,500 | 27% | 65% |
| Winnebago County | IL | 285,350 | 17% | 100% |
| McHenry County | IL | 185,107 | 11% | 60% |
| LaSalle County | IL | 109,658 | 6% | 100% |
| Kankakee County | IL | 107,502 | 6% | 100% |
| DeKalb County | IL | 100,420 | 6% | 100% |
| Boone County | IL | 53,448 | 3% | 100% |
| Grundy County | IL | 52,533 | 3% | 100% |
| Ogle County | IL | 51,788 | 3% | 100% |
| Whiteside County | IL | 48,648 | 3% | 87% |
| Stephenson County | IL | 44,630 | 3% | 100% |
| Livingston County | IL | 35,815 | 2% | 100% |
| Lee County | IL | 34,145 | 2% | 100% |
| Bureau County | IL | 30,529 | 2% | 92% |
| Iroquois County | IL | 24,325 | 1% | 90% |
| Jo Daviess County | IL | 22,035 | 1% | 100% |
| Kendall County | IL | 19,939 | 1% | 15% |
| Carroll County | IL | 15,702 | 1% | 100% |
| Cook County | IL | 10,072 | 1% | 0% |
| Putnam County | IL | 5,637 | 0% | 100% |
| McLean County | IL | 4,981 | 0% | 3% |
| Marshall County | IL | 2,046 | 0% | 17% |
| Ford County | IL | 1,745 | 0% | 13% |
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 815 been reported for unwanted calls?
Yes – 2,903 unwanted-call complaints were reported to the FTC for numbers showing a 815 area code (May 29 – Aug 14, 2026).
- 54% robocalls
- ↑ 49% vs prior period
Most-reported subjects
- Other38%1,093
- Reducing your debt (credit cards, mortgage, student loans)22%641
- Calls pretending to be government, businesses, or family and friends18%530
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 815?
78% assigned to a telco
- 78% Landline
- 22% Wireless
- 0% Unknown
of 784 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (815)200- | Landline | Paetec Communications |
| (815)201- | Landline | Bandwidth.Com Clec |
| (815)202- | Wireless | New Cingular Wireless Pcs |
| (815)203- | Wireless | Usa Mobility Wireless |
| (815)204- | Wireless | Usa Mobility Wireless |
| (815)205- | Landline | Centurylink Communications |
| (815)206- | Landline | Illinois Bell Tel Co |
| (815)207- | Landline | At&T |
| (815)208- | Landline | Mediacom Telephony Of Illinois |
| (815)209- | Landline | Level 3 Communications |
| (815)210- | Wireless | New Cingular Wireless Pcs |
| (815)212- | Wireless | T-Mobile Usa |
| (815)213- | Wireless | United States Cellular |
| (815)214- | Landline | Rcn Telecom Services Of Illinios |
| (815)215- | Landline | First Communications |
| (815)216- | Wireless | Verizon Wireless |
| (815)217- | Landline | Digital Network Access Communications |
| (815)218- | Wireless | Verizon Wireless |
| (815)219- | Wireless | Sprint Spectrum |
| (815)220- | Landline | Illinois Bell Tel Co |
| (815)221- | Landline | Teleport Communications America |
| (815)222- | Wireless | Verizon Wireless |
| (815)223- | Landline | Illinois Bell Tel Co |
| (815)224- | Landline | Illinois Bell Tel Co |
| (815)225- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)226- | Landline | Illinois Bell Tel Co |
| (815)227- | Landline | Illinois Bell Tel Co |
| (815)228- | Wireless | New Cingular Wireless Pcs |
| (815)229- | Landline | Illinois Bell Tel Co |
| (815)230- | Landline | Level 3 Communications |
| (815)231- | Landline | Illinois Bell Tel Co |
| (815)232- | Landline | Frontier North |
| (815)233- | Landline | Frontier North |
| (815)234- | Landline | Frontier North |
| (815)235- | Landline | Frontier North |
| (815)236- | Wireless | New Cingular Wireless Pcs |
| (815)237- | Landline | Illinois Bell Tel Co |
| (815)238- | Wireless | Verizon Wireless |
| (815)239- | Landline | Frontier North |
| (815)240- | Landline | Charter Fiberlink - Illinois |
| (815)241- | Landline | American Messaging Services |
| (815)242- | Landline | Bandwidth.Com Clec |
| (815)243- | Wireless | United States Cellular |
| (815)244- | Landline | Centurylink |
| (815)245- | Wireless | New Cingular Wireless Pcs |
| (815)246- | Landline | Frontier North |
| (815)247- | Landline | Frontier North |
| (815)248- | Landline | Frontier North |
| (815)249- | Landline | Frontier North |
| (815)250- | Landline | Comcast Ip Phone |
| (815)251- | Landline | Centurylink |
| (815)252- | Wireless | New Cingular Wireless Pcs |
| (815)253- | Landline | Frontier Communications Of Illinois |
| (815)254- | Landline | Illinois Bell Tel Co |
| (815)255- | Landline | Choice One Comm Il |
| (815)256- | Landline | Stelle Tel. Co. |
| (815)257- | Wireless | Illinois Valley Cellular Rsa 2-Ii Partnership |
| (815)258- | Wireless | New Cingular Wireless Pcs |
| (815)259- | Landline | Centurylink |
| (815)260- | Wireless | Sprint Spectrum |
| (815)261- | Landline | Mcimetro Access Transmission Services |
| (815)262- | Wireless | Verizon Wireless |
| (815)263- | Wireless | Verizon Wireless |
| (815)264- | Landline | Frontier North |
| (815)265- | Landline | Illinois Bell Tel Co |
| (815)266- | Landline | Frontier North |
| (815)267- | Landline | Mcimetro Access Transmission Services |
| (815)268- | Landline | Illinois Bell Tel Co |
| (815)269- | Landline | Frontier Communications Of The Carolinas |
| (815)270- | Landline | Charter Fiberlink - Illinois |
| (815)271- | Landline | Mcimetro Access Transmission Services |
| (815)272- | Landline | Mcimetro Access Transmission Services |
| (815)273- | Landline | Centurylink |
| (815)274- | Wireless | New Cingular Wireless Pcs |
| (815)275- | Wireless | Verizon Wireless |
| (815)276- | Landline | Teleport Communications America |
| (815)277- | Landline | Teleport Communications America |
| (815)278- | Wireless | Verizon Wireless |
| (815)279- | Landline | American Messaging Services |
| (815)280- | Landline | Teleport Communications America |
| (815)281- | Wireless | United States Cellular |
| (815)282- | Landline | Illinois Bell Tel Co |
| (815)283- | Landline | Mediacom Telephony Of Illinois |
| (815)284- | Landline | Centurylink |
| (815)285- | Landline | Centurylink |
| (815)286- | Landline | Frontier North |
| (815)287- | Landline | Illinois Bell Tel Co |
| (815)288- | Landline | Centurylink |
| (815)289- | Wireless | United States Cellular |
| (815)290- | Landline | At&T |
| (815)291- | Wireless | United States Cellular |
| (815)292- | Landline | Bergen Tel. Co. |
| (815)293- | Landline | Illinois Bell Tel Co |
| (815)294- | Wireless | Usa Mobility Wireless |
| (815)295- | Wireless | T-Mobile Usa |
| (815)296- | Landline | Telnyx |
| (815)297- | Landline | Frontier North |
| (815)298- | Wireless | Verizon Wireless |
| (815)299- | Wireless | United States Cellular |
| (815)300- | Landline | Illinois Bell Tel Co |
| (815)301- | Landline | Level 3 Communications |
| (815)302- | Wireless | Sprint Spectrum |
| (815)303- | Wireless | Illinois Valley Cellular Rsa 2-I Partnership |
| (815)304- | Landline | Level 3 Communications |
| (815)305- | Landline | Level 3 Communications |
| (815)306- | Landline | Level 3 Communications |
| (815)307- | Landline | Level 3 Communications |
| (815)308- | Landline | Level 3 Communications |
| (815)309- | Landline | Aero North Communications |
| (815)310- | Landline | Level 3 Communications |
| (815)312- | Landline | Ymax Communications |
| (815)313- | Landline | Level 3 Communications |
| (815)314- | Landline | Level 3 Communications |
| (815)315- | Landline | Level 3 Communications |
| (815)316- | Landline | Tds Metrocom |
| (815)317- | Landline | Level 3 Communications |
| (815)318- | Landline | Level 3 Communications |
| (815)319- | Wireless | United States Cellular |
| (815)320- | Landline | Peerless Network Of Illinois |
| (815)321- | Landline | Xo Illinois |
| (815)322- | Landline | Level 3 Communications |
| (815)323- | Landline | Level 3 Communications |
| (815)324- | Landline | Mediacom Telephony Of Illinois |
| (815)325- | Wireless | New Cingular Wireless Pcs |
| (815)326- | Wireless | New Cingular Wireless Pcs |
| (815)327- | Landline | Level 3 Communications |
| (815)328- | Landline | Level 3 Communications |
| (815)329- | Landline | At&T |
| (815)330- | Landline | First Communications |
| (815)331- | Landline | Level 3 Communications |
| (815)332- | Landline | Frontier North |
| (815)333- | Landline | Level 3 Communications |
| (815)334- | Landline | Illinois Bell Tel Co |
| (815)335- | Landline | Frontier North |
| (815)336- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)337- | Landline | Illinois Bell Tel Co |
| (815)338- | Landline | Illinois Bell Tel Co |
| (815)339- | Landline | Frontier North |
| (815)340- | Landline | Comcast Ip Phone |
| (815)341- | Wireless | New Cingular Wireless Pcs |
| (815)342- | Wireless | New Cingular Wireless Pcs |
| (815)343- | Wireless | New Cingular Wireless Pcs |
| (815)344- | Landline | Illinois Bell Tel Co |
| (815)345- | Landline | Level 3 Communications |
| (815)346- | Landline | Level 3 Communications |
| (815)347- | Wireless | Verizon Wireless |
| (815)348- | Landline | Choice One Comm Il |
| (815)349- | Landline | Xo Illinois |
| (815)350- | Landline | Aero North Communications |
| (815)351- | Wireless | Verizon Wireless |
| (815)352- | Landline | Level 3 Communications |
| (815)353- | Wireless | Verizon Wireless |
| (815)354- | Wireless | Verizon Wireless |
| (815)355- | Wireless | Verizon Wireless |
| (815)356- | Landline | Illinois Bell Tel Co |
| (815)357- | Landline | Illinois Bell Tel Co |
| (815)358- | Landline | C-R Telephone Co. |
| (815)359- | Landline | Centurylink |
| (815)360- | Landline | Aero North Communications |
| (815)361- | Landline | Level 3 Communications |
| (815)362- | Landline | Frontier North |
| (815)363- | Landline | Illinois Bell Tel Co |
| (815)364- | Landline | Level 3 Communications |
| (815)365- | Landline | Frontier North |
| (815)366- | Landline | Level 3 Communications |
| (815)367- | Landline | Frontier North |
| (815)368- | Landline | Frontier North |
| (815)369- | Landline | Frontier North |
| (815)370- | Wireless | Verizon Wireless |
| (815)371- | Landline | Level 3 Communications |
| (815)372- | Landline | Illinois Bell Tel Co |
| (815)373- | Landline | Choice One Comm Il |
| (815)374- | Landline | Choice One Comm Il |
| (815)375- | Wireless | United States Cellular |
| (815)376- | Landline | Frontier North |
| (815)377- | Landline | Level 3 Communications |
| (815)378- | Wireless | Sprint Spectrum |
| (815)379- | Landline | Frontier North |
| (815)380- | Landline | Level 3 Communications |
| (815)381- | Landline | Illinois Bell Tel Co |
| (815)382- | Wireless | New Cingular Wireless Pcs |
| (815)383- | Wireless | New Cingular Wireless Pcs |
| (815)384- | Landline | Frontier North |
| (815)385- | Landline | Illinois Bell Tel Co |
| (815)386- | Wireless | Verizon Wireless |
| (815)387- | Landline | Illinois Bell Tel Co |
| (815)388- | Wireless | Sprint Spectrum |
| (815)389- | Landline | Illinois Bell Tel Co |
| (815)390- | Landline | Comcast Ip Phone |
| (815)391- | Landline | Illinois Bell Tel Co |
| (815)392- | Landline | Kinsman Mutual Tel. Co. |
| (815)393- | Landline | Frontier North |
| (815)394- | Landline | Illinois Bell Tel Co |
| (815)395- | Landline | Illinois Bell Tel Co |
| (815)396- | Landline | Frontier North |
| (815)397- | Landline | Illinois Bell Tel Co |
| (815)398- | Landline | Illinois Bell Tel Co |
| (815)399- | Landline | Illinois Bell Tel Co |
| (815)400- | Landline | Mediacom Telephony Of Illinois |
| (815)401- | Landline | Level 3 Communications |
| (815)402- | Landline | Level 3 Communications |
| (815)403- | Wireless | Sprint Spectrum |
| (815)404- | Wireless | Sprint Spectrum |
| (815)405- | Wireless | Sprint Spectrum |
| (815)406- | Landline | Frontier North |
| (815)407- | Landline | Illinois Bell Tel Co |
| (815)408- | Landline | First Communications |
| (815)409- | Wireless | Verizon Wireless |
| (815)410- | Landline | Level 3 Communications |
| (815)412- | Landline | Level 3 Communications |
| (815)413- | Landline | First Communications |
| (815)414- | Wireless | New Cingular Wireless Pcs |
| (815)415- | Landline | Illinois Bell Tel Co |
| (815)416- | Landline | Illinois Bell Tel Co |
| (815)417- | Landline | Illinois Bell Tel Co |
| (815)418- | Landline | First Communications |
| (815)419- | Landline | At&T |
| (815)420- | Landline | Onvoy |
| (815)421- | Landline | Illinois Bell Tel Co |
| (815)422- | Landline | Illinois Bell Tel Co |
| (815)423- | Landline | Illinois Bell Tel Co |
| (815)424- | Landline | Illinois Bell Tel Co |
| (815)425- | Landline | Level 3 Communications |
| (815)426- | Landline | Illinois Bell Tel Co |
| (815)427- | Landline | Illinois Bell Tel Co |
| (815)428- | Landline | Frontier North |
| (815)429- | Landline | Frontier North |
| (815)430- | Landline | First Communications |
| (815)431- | Landline | Illinois Bell Tel Co |
| (815)432- | Landline | Illinois Bell Tel Co |
| (815)433- | Landline | Illinois Bell Tel Co |
| (815)434- | Landline | Illinois Bell Tel Co |
| (815)435- | Landline | Frontier North |
| (815)436- | Landline | Illinois Bell Tel Co |
| (815)437- | Landline | Frontier North |
| (815)438- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)439- | Landline | Illinois Bell Tel Co |
| (815)440- | Wireless | Verizon Wireless |
| (815)441- | Wireless | Verizon Wireless |
| (815)442- | Landline | Tonica Tel. Co. |
| (815)443- | Landline | Frontier North |
| (815)444- | Landline | Illinois Bell Tel Co |
| (815)445- | Landline | Frontier North |
| (815)446- | Landline | Frontier North |
| (815)447- | Landline | Frontier Communications Of Depue |
| (815)448- | Landline | Illinois Bell Tel Co |
| (815)449- | Landline | Frontier North |
| (815)450- | Wireless | New Cingular Wireless Pcs |
| (815)451- | Wireless | New Cingular Wireless Pcs |
| (815)452- | Landline | Frontier North |
| (815)453- | Landline | Frontier North |
| (815)454- | Landline | Frontier North |
| (815)455- | Landline | Illinois Bell Tel Co |
| (815)456- | Landline | Frontier North |
| (815)457- | Landline | Frontier Communications Of The Carolinas |
| (815)458- | Landline | Illinois Bell Tel Co |
| (815)459- | Landline | Illinois Bell Tel Co |
| (815)460- | Landline | First Communications |
| (815)461- | Landline | Xo Illinois |
| (815)462- | Landline | Illinois Bell Tel Co |
| (815)463- | Landline | Illinois Bell Tel Co |
| (815)464- | Landline | Illinois Bell Tel Co |
| (815)465- | Landline | Illinois Bell Tel Co |
| (815)466- | Landline | Illinois Bell Tel Co |
| (815)467- | Landline | Illinois Bell Tel Co |
| (815)468- | Landline | Illinois Bell Tel Co |
| (815)469- | Landline | Illinois Bell Tel Co |
| (815)470- | Landline | Illinois Bell Tel Co |
| (815)471- | Wireless | Illinois Valley Cellular Rsa 2-I Partnership |
| (815)472- | Landline | Illinois Bell Tel Co |
| (815)473- | Landline | Frontier Communications Of The Carolinas |
| (815)474- | Wireless | New Cingular Wireless Pcs |
| (815)475- | Landline | Illinois Bell Tel Co |
| (815)476- | Landline | Illinois Bell Tel Co |
| (815)477- | Landline | Illinois Bell Tel Co |
| (815)478- | Landline | Illinois Bell Tel Co |
| (815)479- | Landline | Illinois Bell Tel Co |
| (815)480- | Wireless | Usa Mobility Wireless |
| (815)481- | Wireless | Illinois Valley Cellular Rsa 2-I Partnership |
| (815)482- | Wireless | Sprint Spectrum |
| (815)483- | Wireless | Sprint Spectrum |
| (815)484- | Landline | Illinois Bell Tel Co |
| (815)485- | Landline | Illinois Bell Tel Co |
| (815)486- | Landline | Frontier North |
| (815)487- | Landline | First Communications |
| (815)488- | Wireless | Illinois Valley Cellular Rsa 2-I Partnership |
| (815)489- | Landline | Illinois Bell Tel Co |
| (815)490- | Landline | Illinois Bell Tel Co |
| (815)491- | Landline | Nuso |
| (815)492- | Landline | Frontier North |
| (815)493- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)494- | Wireless | United States Cellular |
| (815)495- | Landline | Frontier North |
| (815)496- | Landline | Frontier North |
| (815)497- | Landline | Frontier North |
| (815)498- | Landline | Frontier North |
| (815)499- | Wireless | United States Cellular |
| (815)500- | Landline | Mediacom Telephony Of Illinois |
| (815)501- | Wireless | Sprint Spectrum |
| (815)502- | Landline | First Communications |
| (815)503- | Wireless | Sprint Spectrum |
| (815)504- | Landline | First Communications |
| (815)505- | Wireless | T-Mobile Usa |
| (815)506- | Landline | Level 3 Communications |
| (815)507- | Landline | Level 3 Communications |
| (815)508- | Wireless | New Cingular Wireless Pcs |
| (815)509- | Wireless | Sprint Spectrum |
| (815)510- | Landline | Mediacom Telephony Of Illinois |
| (815)512- | Landline | First Communications |
| (815)513- | Landline | Level 3 Communications |
| (815)514- | Wireless | Sprint Spectrum |
| (815)515- | Landline | Level 3 Communications |
| (815)516- | Wireless | Sprint Spectrum |
| (815)517- | Landline | Mcimetro Access Transmission Services |
| (815)518- | Landline | First Communications |
| (815)519- | Wireless | Sprint Spectrum |
| (815)520- | Wireless | Verizon Wireless |
| (815)521- | Landline | Illinois Bell Tel Co |
| (815)522- | Landline | Frontier North |
| (815)523- | Landline | Teleport Communications America |
| (815)524- | Landline | Teleport Communications America |
| (815)525- | Landline | Tds Metrocom |
| (815)526- | Landline | Teleport Communications America |
| (815)527- | Landline | Teleport Communications America |
| (815)528- | Landline | Teleport Communications America |
| (815)529- | Wireless | Verizon Wireless |
| (815)530- | Wireless | Sprint Spectrum |
| (815)531- | Landline | Teleport Communications America |
| (815)532- | Wireless | Usa Mobility Wireless |
| (815)533- | Wireless | Indiana Paging Network |
| (815)534- | Landline | Level 3 Communications |
| (815)535- | Landline | Illinois Bell Tel Co |
| (815)536- | Wireless | Usa Mobility Wireless |
| (815)537- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)538- | Landline | Frontier North |
| (815)539- | Landline | Frontier North |
| (815)540- | Wireless | Sprint Spectrum |
| (815)541- | Wireless | United States Cellular |
| (815)542- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)543- | Wireless | United States Cellular |
| (815)544- | Landline | Frontier North |
| (815)545- | Wireless | New Cingular Wireless Pcs |
| (815)546- | Wireless | New Cingular Wireless Pcs |
| (815)547- | Landline | Frontier North |
| (815)548- | Landline | Illinois Bell Tel Co |
| (815)549- | Wireless | Sprint Spectrum |
| (815)550- | Landline | Level 3 Communications |
| (815)551- | Landline | Onvoy |
| (815)552- | Landline | Illinois Bell Tel Co |
| (815)553- | Landline | Ovation Communications Of Illinois |
| (815)554- | Landline | Mediacom Telephony Of Illinois |
| (815)556- | Landline | Level 3 Communications |
| (815)557- | Wireless | Sprint Spectrum |
| (815)558- | Wireless | United States Cellular |
| (815)559- | Landline | Voip Innovations |
| (815)560- | Wireless | Sprint Spectrum |
| (815)561- | Landline | Frontier North |
| (815)562- | Landline | Frontier North |
| (815)563- | Landline | Frontier North |
| (815)564- | Landline | Illinois Bell Tel Co |
| (815)565- | Landline | Mediacom Telephony Of Illinois |
| (815)566- | Landline | Level 3 Communications |
| (815)567- | Landline | Frontier North |
| (815)568- | Landline | Illinois Bell Tel Co |
| (815)569- | Landline | Frontier North |
| (815)570- | Landline | Level 3 Communications |
| (815)571- | Landline | Mediacom Telephony Of Illinois |
| (815)572- | Landline | Level 3 Communications |
| (815)573- | Landline | Level 3 Communications |
| (815)574- | Landline | Aero North Communications |
| (815)575- | Wireless | New Cingular Wireless Pcs |
| (815)576- | Landline | Aero North Communications |
| (815)577- | Landline | Illinois Bell Tel Co |
| (815)578- | Landline | Illinois Bell Tel Co |
| (815)579- | Wireless | Sprint Spectrum |
| (815)580- | Landline | At&T |
| (815)581- | Landline | Comcast Ip Phone |
| (815)582- | Wireless | T-Mobile Usa |
| (815)583- | Landline | Aero North Communications |
| (815)584- | Landline | Illinois Bell Tel Co |
| (815)585- | Landline | Level 3 Communications |
| (815)586- | Landline | C-R Telephone Co. |
| (815)587- | Landline | Level 3 Communications |
| (815)588- | Landline | Illinois Bell Tel Co |
| (815)589- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)590- | Wireless | T-Mobile Usa |
| (815)591- | Landline | Frontier North |
| (815)592- | Wireless | Verizon Wireless |
| (815)593- | Landline | At&T |
| (815)594- | Landline | Frontier North |
| (815)595- | Landline | At&T |
| (815)596- | Landline | At&T |
| (815)597- | Landline | Frontier North |
| (815)598- | Landline | Frontier North |
| (815)599- | Landline | Frontier North |
| (815)600- | Wireless | New Cingular Wireless Pcs |
| (815)601- | Wireless | United States Cellular |
| (815)602- | Landline | First Communications |
| (815)603- | Wireless | T-Mobile Usa |
| (815)604- | Landline | Onvoy |
| (815)605- | Landline | Level 3 Communications |
| (815)606- | Landline | First Communications |
| (815)607- | Landline | Itv-3, Llc D/B/A I3 Broadband |
| (815)608- | Wireless | T-Mobile Usa |
| (815)609- | Landline | Illinois Bell Tel Co |
| (815)610- | Landline | Itv-3, Llc D/B/A I3 Broadband |
| (815)612- | Landline | Itv-3, Llc D/B/A I3 Broadband |
| (815)613- | Wireless | New Cingular Wireless Pcs |
| (815)614- | Landline | Illinois Bell Tel Co |
| (815)615- | Landline | Level 3 Communications |
| (815)616- | Wireless | T-Mobile Usa |
| (815)617- | Landline | At&T |
| (815)618- | Wireless | New Cingular Wireless Pcs |
| (815)619- | Landline | Aero North Communications |
| (815)620- | Landline | Peerless Network Of Illinois |
| (815)621- | Wireless | Sprint Spectrum |
| (815)622- | Landline | Illinois Bell Tel Co |
| (815)623- | Landline | Frontier North |
| (815)624- | Landline | Frontier North |
| (815)625- | Landline | Illinois Bell Tel Co |
| (815)626- | Landline | Illinois Bell Tel Co |
| (815)627- | Landline | Frontier North |
| (815)628- | Landline | Frontier North |
| (815)629- | Landline | Frontier North |
| (815)630- | Wireless | T-Mobile Usa |
| (815)631- | Landline | Illinois Bell Tel Co |
| (815)632- | Landline | Illinois Bell Tel Co |
| (815)633- | Landline | Illinois Bell Tel Co |
| (815)634- | Landline | Illinois Bell Tel Co |
| (815)635- | Landline | Frontier North |
| (815)636- | Landline | Illinois Bell Tel Co |
| (815)637- | Landline | Illinois Bell Tel Co |
| (815)638- | Landline | Frontier North |
| (815)639- | Landline | Illinois Bell Tel Co |
| (815)640- | Landline | Teleport Communications America |
| (815)641- | Wireless | Verizon Wireless |
| (815)642- | Landline | Level 3 Communications |
| (815)643- | Landline | Frontier North |
| (815)644- | Landline | Rcn Telecom Services Of Illinios |
| (815)645- | Landline | Frontier North |
| (815)646- | Landline | Frontier North |
| (815)647- | Landline | Mediacom Telephony Of Illinois |
| (815)648- | Landline | Frontier North |
| (815)649- | Landline | Rcn Telecom Services Of Illinios |
| (815)650- | Landline | At&T |
| (815)651- | Landline | Rcn Telecom Services Of Illinios |
| (815)652- | Landline | Centurylink |
| (815)653- | Landline | Frontier North |
| (815)654- | Landline | Illinois Bell Tel Co |
| (815)655- | Landline | Teleport Communications America |
| (815)656- | Landline | Level 3 Communications |
| (815)657- | Landline | Illinois Bell Tel Co |
| (815)658- | Landline | Teleport Communications America |
| (815)659- | Landline | Frontier North |
| (815)660- | Landline | Rcn Telecom Services Of Illinios |
| (815)661- | Landline | Rcn Telecom Services Of Illinios |
| (815)662- | Landline | Level 3 Communications |
| (815)663- | Landline | Frontier North |
| (815)664- | Landline | Frontier North |
| (815)665- | Landline | Rcn Telecom Services Of Illinios |
| (815)666- | Wireless | Verizon Wireless |
| (815)667- | Landline | Illinois Bell Tel Co |
| (815)668- | Landline | Onvoy |
| (815)669- | Landline | Level 3 Communications |
| (815)670- | Wireless | Sprint Spectrum |
| (815)671- | Landline | Level 3 Communications |
| (815)672- | Landline | Frontier North |
| (815)673- | Landline | Frontier North |
| (815)674- | Wireless | New Cingular Wireless Pcs |
| (815)675- | Landline | Frontier North |
| (815)676- | Landline | Level 3 Communications |
| (815)677- | Wireless | Verizon Wireless |
| (815)678- | Landline | Frontier North |
| (815)679- | Landline | Rcn Telecom Services Of Illinios |
| (815)680- | Landline | Rcn Telecom Services Of Illinios |
| (815)681- | Wireless | Verizon Wireless |
| (815)682- | Landline | Frontier Communications Of The Carolinas |
| (815)683- | Landline | Illinois Bell Tel Co |
| (815)684- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)685- | Wireless | New Cingular Wireless Pcs |
| (815)686- | Landline | Frontier North |
| (815)687- | Landline | Rcn Telecom Services Of Illinios |
| (815)688- | Landline | Frontier North |
| (815)689- | Landline | Frontier Communications Of Illinois |
| (815)690- | Wireless | Sprint Spectrum |
| (815)691- | Landline | Rcn Telecom Services Of Illinios |
| (815)692- | Landline | Frontier North |
| (815)693- | Wireless | Sprint Spectrum |
| (815)694- | Landline | Frontier North |
| (815)695- | Landline | Illinois Bell Tel Co |
| (815)696- | Landline | Aero North Communications |
| (815)697- | Landline | Frontier North |
| (815)698- | Landline | Frontier North |
| (815)699- | Landline | Frontier North |
| (815)701- | Landline | Level 3 Communications |
| (815)702- | Landline | Centurylink Communications |
| (815)703- | Wireless | Sprint Spectrum |
| (815)704- | Landline | Mcleodusa Telecommunication Services |
| (815)705- | Landline | Teleport Communications America |
| (815)706- | Landline | Exiant Communications |
| (815)707- | Landline | Level 3 Communications |
| (815)708- | Landline | Comcast Ip Phone |
| (815)709- | Landline | Level 3 Communications |
| (815)710- | Landline | At&T |
| (815)712- | Wireless | Sprint Spectrum |
| (815)713- | Wireless | New Cingular Wireless Pcs |
| (815)714- | Landline | Bandwidth.Com Clec |
| (815)715- | Wireless | New Cingular Wireless Pcs |
| (815)716- | Landline | Metropcs |
| (815)717- | Landline | First Communications |
| (815)718- | Wireless | United States Cellular |
| (815)719- | Wireless | Sprint Spectrum |
| (815)720- | Landline | Illinois Bell Tel Co |
| (815)721- | Landline | At&T |
| (815)722- | Landline | Illinois Bell Tel Co |
| (815)723- | Landline | Illinois Bell Tel Co |
| (815)724- | Landline | Illinois Bell Tel Co |
| (815)725- | Landline | Illinois Bell Tel Co |
| (815)726- | Landline | Illinois Bell Tel Co |
| (815)727- | Landline | Illinois Bell Tel Co |
| (815)728- | Landline | Frontier North |
| (815)729- | Landline | Illinois Bell Tel Co |
| (815)730- | Landline | Illinois Bell Tel Co |
| (815)731- | Landline | Illinois Bell Tel Co |
| (815)732- | Landline | Frontier North |
| (815)733- | Landline | Rcn Telecom Services Of Illinios |
| (815)734- | Landline | Frontier North |
| (815)735- | Wireless | New Cingular Wireless Pcs |
| (815)736- | Landline | Illinois Bell Tel Co |
| (815)737- | Landline | Sharon Tel. Co. |
| (815)738- | Landline | Leaf River Telephone Co. |
| (815)739- | Wireless | Sprint Spectrum |
| (815)740- | Landline | Illinois Bell Tel Co |
| (815)741- | Landline | Illinois Bell Tel Co |
| (815)742- | Wireless | United States Cellular |
| (815)743- | Landline | Frontier Communications-Prairie |
| (815)744- | Landline | Illinois Bell Tel Co |
| (815)745- | Landline | Frontier North |
| (815)746- | Landline | Marseilles Tel. Co. Of Marseilles |
| (815)747- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)748- | Landline | Frontier North |
| (815)749- | Landline | Bandwidth.Com Clec |
| (815)750- | Landline | Mtco Communications |
| (815)751- | Wireless | Verizon Wireless |
| (815)752- | Landline | Frontier North |
| (815)753- | Landline | Frontier North |
| (815)754- | Landline | Frontier North |
| (815)755- | Landline | Onvoy |
| (815)756- | Landline | Frontier North |
| (815)757- | Wireless | United States Cellular |
| (815)758- | Landline | Frontier North |
| (815)759- | Landline | Illinois Bell Tel Co |
| (815)760- | Wireless | Verizon Wireless |
| (815)761- | Wireless | Verizon Wireless |
| (815)762- | Wireless | Verizon Wireless |
| (815)763- | Wireless | Verizon Wireless |
| (815)764- | Wireless | United States Cellular |
| (815)765- | Landline | Frontier North |
| (815)766- | Wireless | United States Cellular |
| (815)767- | Landline | American Messaging Services |
| (815)768- | Landline | Illinois Bell Tel Co |
| (815)769- | Landline | Level 3 Communications |
| (815)770- | Landline | Charter Fiberlink - Illinois |
| (815)771- | Landline | Rcn Telecom Services Of Illinios |
| (815)772- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)773- | Landline | Illinois Bell Tel Co |
| (815)774- | Landline | Illinois Bell Tel Co |
| (815)775- | Wireless | Usa Mobility Wireless |
| (815)776- | Landline | Illinois Bell Tel Co |
| (815)777- | Landline | Illinois Bell Tel Co |
| (815)778- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)780- | Landline | Level 3 Communications |
| (815)781- | Landline | Rcn Telecom Services Of Illinios |
| (815)782- | Landline | Level 3 Communications |
| (815)783- | Landline | Rcn Telecom Services Of Illinios |
| (815)784- | Landline | Frontier North |
| (815)785- | Landline | Rcn Telecom Services Of Illinios |
| (815)786- | Landline | Frontier North |
| (815)787- | Landline | Frontier North |
| (815)788- | Landline | Illinois Bell Tel Co |
| (815)789- | Landline | Frontier North |
| (815)790- | Wireless | Sprint Spectrum |
| (815)791- | Wireless | Sprint Spectrum |
| (815)792- | Landline | Illinois Bell Tel Co |
| (815)793- | Wireless | T-Mobile Usa |
| (815)794- | Landline | Marseilles Tel. Co. Of Marseilles |
| (815)795- | Landline | Marseilles Tel. Co. Of Marseilles |
| (815)796- | Landline | Frontier Communications-Prairie |
| (815)797- | Landline | Level 3 Communications |
| (815)798- | Landline | Aero North Communications |
| (815)799- | Landline | Level 3 Communications |
| (815)800- | Landline | Mediacom Telephony Of Illinois |
| (815)801- | Landline | Aero North Communications |
| (815)802- | Landline | Illinois Bell Tel Co |
| (815)803- | Landline | Aero North Communications |
| (815)804- | Landline | Aero North Communications |
| (815)805- | Landline | Aero North Communications |
| (815)806- | Landline | Illinois Bell Tel Co |
| (815)807- | Landline | Aero North Communications |
| (815)808- | Landline | Aero North Communications |
| (815)809- | Landline | Aero North Communications |
| (815)810- | Landline | Aero North Communications |
| (815)812- | Landline | Aero North Communications |
| (815)813- | Landline | Aero North Communications |
| (815)814- | Wireless | T-Mobile Usa |
| (815)816- | Landline | Aero North Communications |
| (815)817- | Landline | Aero North Communications |
| (815)818- | Landline | Aero North Communications |
| (815)819- | Landline | Aero North Communications |
| (815)820- | Landline | Aero North Communications |
| (815)821- | Wireless | United States Cellular |
| (815)822- | Wireless | New Cingular Wireless Pcs |
| (815)823- | Landline | Xo Illinois |
| (815)824- | Landline | Frontier North |
| (815)825- | Landline | Frontier North |
| (815)826- | Wireless | Verizon Wireless |
| (815)827- | Landline | Frontier North |
| (815)828- | Landline | Xo Illinois |
| (815)829- | Landline | Aero North Communications |
| (815)830- | Wireless | New Cingular Wireless Pcs |
| (815)831- | Landline | Aero North Communications |
| (815)832- | Landline | Frontier Communications Of Illinois |
| (815)833- | Landline | Aero North Communications |
| (815)834- | Landline | Illinois Bell Tel Co |
| (815)835- | Landline | Aero North Communications |
| (815)836- | Landline | Illinois Bell Tel Co |
| (815)837- | Landline | Aero North Communications |
| (815)838- | Landline | Illinois Bell Tel Co |
| (815)839- | Landline | Xo Illinois |
| (815)840- | Landline | Aero North Communications |
| (815)841- | Landline | Aero North Communications |
| (815)842- | Landline | Frontier North |
| (815)843- | Landline | Aero North Communications |
| (815)844- | Landline | Frontier North |
| (815)845- | Landline | Frontier North |
| (815)846- | Landline | Level 3 Communications |
| (815)847- | Landline | At&T |
| (815)848- | Wireless | Illinois Valley Cellular Rsa 2-I Partnership |
| (815)849- | Landline | Frontier North |
| (815)850- | Landline | Aero North Communications |
| (815)851- | Wireless | Usa Mobility Wireless |
| (815)852- | Landline | Aero North Communications |
| (815)853- | Landline | Frontier North |
| (815)854- | Landline | Frontier North |
| (815)855- | Landline | Mediacom Telephony Of Illinois |
| (815)856- | Landline | Leonore Mutual Tel. Co. |
| (815)857- | Landline | Frontier North |
| (815)858- | Landline | Frontier North |
| (815)859- | Landline | Vonage America |
| (815)860- | Landline | Teleport Communications America |
| (815)861- | Wireless | New Cingular Wireless Pcs |
| (815)862- | Landline | Charter Fiberlink - Illinois |
| (815)863- | Landline | Frontier North |
| (815)864- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)865- | Landline | Frontier North |
| (815)866- | Wireless | Illinois Valley Cellular Rsa 2-I Partnership |
| (815)867- | Wireless | Sprint Spectrum |
| (815)868- | Landline | Frontier North |
| (815)869- | Landline | Frontier North |
| (815)870- | Wireless | Usa Mobility Wireless |
| (815)871- | Wireless | United States Cellular |
| (815)872- | Landline | Frontier North |
| (815)873- | Landline | Frontier North |
| (815)874- | Landline | Frontier North |
| (815)875- | Landline | Frontier North |
| (815)876- | Landline | Frontier North |
| (815)877- | Landline | Illinois Bell Tel Co |
| (815)878- | Wireless | New Cingular Wireless Pcs |
| (815)879- | Landline | Frontier North |
| (815)880- | Landline | Xo Illinois |
| (815)881- | Landline | Level 3 Communications |
| (815)882- | Landline | Mcnabb Tel. Co. |
| (815)883- | Landline | Illinois Bell Tel Co |
| (815)884- | Landline | Mediacom Telephony Of Illinois |
| (815)885- | Landline | Frontier North |
| (815)886- | Landline | Illinois Bell Tel Co |
| (815)887- | Landline | Teleport Communications America |
| (815)888- | Landline | Level 3 Communications |
| (815)889- | Landline | Frontier Communications Of The Carolinas |
| (815)890- | Landline | Aero North Communications |
| (815)891- | Landline | Aero North Communications |
| (815)892- | Landline | Teleport Communications America |
| (815)893- | Landline | Comcast Ip Phone |
| (815)894- | Landline | Frontier North |
| (815)895- | Landline | Frontier North |
| (815)896- | Landline | Aero North Communications |
| (815)897- | Landline | Mediacom Telephony Of Illinois |
| (815)898- | Landline | Aero North Communications |
| (815)899- | Landline | Frontier North |
| (815)900- | Wireless | New Cingular Wireless Pcs |
| (815)901- | Landline | Comcast Ip Phone |
| (815)902- | Landline | Mediacom Telephony Of Illinois |
| (815)903- | Landline | American Messaging Services |
| (815)904- | Wireless | New Cingular Wireless Pcs |
| (815)905- | Landline | Level 3 Communications |
| (815)906- | Landline | Mediacom Telephony Of Illinois |
| (815)907- | Landline | Level 3 Communications |
| (815)908- | Wireless | Verizon Wireless |
| (815)909- | Wireless | T-Mobile Usa |
| (815)910- | Wireless | Illinois Valley Cellular Rsa 2-I Partnership |
| (815)912- | Landline | Aero North Communications |
| (815)913- | Landline | Centurylink Communications |
| (815)914- | Wireless | Sprint Spectrum |
| (815)915- | Landline | Level 3 Communications |
| (815)916- | Landline | Onvoy |
| (815)917- | Landline | Aero North Communications |
| (815)918- | Landline | Level 3 Communications |
| (815)919- | Wireless | T-Mobile Usa |
| (815)920- | Landline | Mediacom Telephony Of Illinois |
| (815)921- | Landline | Illinois Bell Tel Co |
| (815)922- | Wireless | Verizon Wireless |
| (815)923- | Landline | Illinois Bell Tel Co |
| (815)924- | Landline | Aero North Communications |
| (815)925- | Landline | Frontier North |
| (815)926- | Landline | Level 3 Communications |
| (815)927- | Landline | Level 3 Communications |
| (815)928- | Landline | Illinois Bell Tel Co |
| (815)929- | Landline | Illinois Bell Tel Co |
| (815)930- | Landline | Mediacom Telephony Of Illinois |
| (815)931- | Wireless | New Cingular Wireless Pcs |
| (815)932- | Landline | Illinois Bell Tel Co |
| (815)933- | Landline | Illinois Bell Tel Co |
| (815)934- | Landline | Frontier North |
| (815)935- | Landline | Illinois Bell Tel Co |
| (815)936- | Landline | Illinois Bell Tel Co |
| (815)937- | Landline | Illinois Bell Tel Co |
| (815)938- | Landline | Frontier North |
| (815)939- | Landline | Illinois Bell Tel Co |
| (815)940- | Landline | Level 3 Communications |
| (815)941- | Landline | Illinois Bell Tel Co |
| (815)942- | Landline | Illinois Bell Tel Co |
| (815)943- | Landline | Illinois Bell Tel Co |
| (815)944- | Landline | Illinois Bell Tel Co |
| (815)945- | Landline | Frontier North |
| (815)946- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)947- | Landline | Frontier North |
| (815)948- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)949- | Landline | Frontier North |
| (815)951- | Landline | Aero North Communications |
| (815)952- | Landline | Aero North Communications |
| (815)953- | Wireless | Verizon Wireless |
| (815)954- | Wireless | Verizon Wireless |
| (815)955- | Wireless | Sprint Spectrum |
| (815)956- | Landline | Citizens Telecom Co Illinois-Frontier Citizens |
| (815)957- | Landline | Level 3 Communications |
| (815)960- | Landline | North County Communication |
| (815)961- | Landline | Illinois Bell Tel Co |
| (815)962- | Landline | Illinois Bell Tel Co |
| (815)963- | Landline | Illinois Bell Tel Co |
| (815)964- | Landline | Illinois Bell Tel Co |
| (815)965- | Landline | Illinois Bell Tel Co |
| (815)966- | Landline | Illinois Bell Tel Co |
| (815)967- | Landline | Illinois Bell Tel Co |
| (815)968- | Landline | Illinois Bell Tel Co |
| (815)969- | Landline | Illinois Bell Tel Co |
| (815)970- | Wireless | Sprint Spectrum |
| (815)971- | Landline | Illinois Bell Tel Co |
| (815)972- | Landline | Illinois Bell Tel Co |
| (815)973- | Wireless | United States Cellular |
| (815)974- | Landline | Onvoy |
| (815)975- | Wireless | New Cingular Wireless Pcs |
| (815)977- | Landline | Mcimetro Access Transmission Services |
| (815)978- | Wireless | Verizon Wireless |
| (815)979- | Wireless | Verizon Wireless |
| (815)980- | Wireless | Verizon Wireless |
| (815)981- | Landline | Level 3 Communications |
| (815)982- | Landline | Mediacom Telephony Of Illinois |
| (815)983- | Landline | American Messaging Services |
| (815)984- | Landline | Frontier Communications Of The Carolinas |
| (815)985- | Wireless | Verizon Wireless |
| (815)986- | Landline | Choice One Comm Il |
| (815)987- | Landline | Illinois Bell Tel Co |
| (815)988- | Wireless | United States Cellular |
| (815)989- | Landline | Mediacom Telephony Of Illinois |
| (815)990- | Wireless | Verizon Wireless |
| (815)991- | Wireless | New Cingular Wireless Pcs |
| (815)992- | Wireless | Sprint Spectrum |
| (815)993- | Wireless | New Cingular Wireless Pcs |
| (815)994- | Landline | Metropcs |
| (815)995- | Landline | Teleport Communications America |
| (815)996- | Landline | Centurylink Communications |
| (815)997- | Landline | Mcleodusa Telecommunication Services |
| (815)998- | Landline | Frontier North |
| (815)999- | Wireless | Sprint Spectrum |
| No prefixes match “”. | ||
Frequently Asked Questions about the 815 Area Code
Who called me from a 815 number?
A 815 number is assigned to Rockford, Illinois, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 815 code to look nearby, so a 815 number doesn't prove the caller is local. Recently, 2,903 unwanted-call complaints were reported to the FTC for numbers showing the 815 code (54% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 815 a scam area code?
No area code is a scam on its own. 815 is a normal, officially assigned code for Rockford, Illinois. Spam callers spoof local codes to raise the odds you answer, so 815 on your caller ID says nothing about who is really calling. Recently, 2,903 unwanted-call complaints were reported to the FTC for numbers showing the 815 code (54% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 815 area code?
Repeated calls from different 815 numbers are usually spoofing: a robocaller rotates through 815 numbers so each call looks local and slips past simple blocks. Recently, 2,903 unwanted-call complaints were reported to the FTC for numbers showing the 815 code (54% 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 815 number?
If you aren't expecting a 815 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 815 area code?
Block a single 815 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 815 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 815?
Area code 815 covers Rockford and the surrounding area in Illinois, spanning 275 cities with about 1,697,555 residents. It shares its area with overlay code 779.
When did area code 815 go into service?
Area code 815 went into service on January 1, 1947. Overlay code 779 now shares its territory.
Is 815 a real area code?
Yes. 815 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Rockford, Illinois. A real code can still show up on spoofed spam calls, so treat unknown 815 calls with normal caution.
What timezone is the 815 area code in?
The 815 area code is in the Central Time (CT). Because a number can be kept when someone moves or switches to VoIP, a specific 815 caller may not be in that zone.
How do I call a 815 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 815 and the seven-digit number. From a mobile phone you can usually just enter +1 815 followed by the number and let the phone add the exit code for you.