307 Area CodeCheyenne, WY
Area code 307 covers Cheyenne and nearby communities in Wyoming, in the Mountain Time (MT) zone, home to about 576,851 people across 203 cities. It's the only area code for this region, so the three digits alone place the caller.
Overview
- Major City
- Cheyenne
- State
- Wyoming (WY)
- Timezone
- Mountain Time (MT)
- Current Time
- –:––
- Overlay
- No – unique area code
Where is area code 307?
Area code 307 serves part of Cheyenne, WY and the surrounding areas. It is a unique area code with no overlays.
Overview of the 307 Area Code
What is the 307 area code?
The 307 area code serves Cheyenne, Wyoming. When you see a 307 number, it indicates a local number within this geographic area.
Why was area code 307 created?
Area code 307 has been in service since January 1, 1947.
Geographic Coverage of the 307 Area Code
The 307 area code serves Cheyenne and surrounding areas in Wyoming. It operates within the Mountain Time (MT) time zone. This area code covers several key cities, including:
- Cheyenne
- Casper
- Gillette
- Laramie
- Rock Springs
- Sheridan
Got a call from a 307 number? It came from Cheyenne, WY. No other area code overlaps the 307 territory, so the prefix alone identifies where the caller is. Of the listed cities' population, Cheyenne accounts for about 14.4%; the rest is split across 202 smaller cities.
Cheyenne Area Code Overview
The 307 area code provides comprehensive telephone coverage for Cheyenne and its surrounding communities. As the sole area code for this region, it uniquely identifies all local numbers within the service area.
What cities does area code 307 cover?
| City | State | Population | Population in 307 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Cheyenne | WY | 65,704 | 65,704 | 14.4% | 100.0% |
| Casper | WY | 58,823 | 58,823 | 12.9% | 100.0% |
| Gillette | WY | 33,846 | 33,846 | 7.4% | 100.0% |
| Laramie | WY | 32,957 | 32,957 | 7.2% | 100.0% |
| Rock Springs | WY | 22,967 | 22,967 | 5.0% | 100.0% |
| Sheridan | WY | 19,813 | 19,813 | 4.3% | 100.0% |
| Evanston | WY | 11,691 | 11,691 | 2.6% | 100.0% |
| Green River | WY | 11,474 | 11,474 | 2.5% | 100.0% |
| Riverton | WY | 10,953 | 10,953 | 2.4% | 100.0% |
| Jackson | WY | 10,680 | 10,680 | 2.3% | 100.0% |
| Cody | WY | 10,391 | 10,391 | 2.3% | 100.0% |
| Rawlins | WY | 7,952 | 7,952 | 1.7% | 100.0% |
| Lander | WY | 7,451 | 7,451 | 1.6% | 100.0% |
| Powell | WY | 6,551 | 6,551 | 1.4% | 100.0% |
| Douglas | WY | 6,442 | 6,442 | 1.4% | 100.0% |
| Torrington | WY | 6,211 | 6,211 | 1.4% | 100.0% |
| Ranchettes | WY | 5,798 | 5,798 | 1.3% | 100.0% |
| Worland | WY | 4,765 | 4,765 | 1.0% | 100.0% |
| Buffalo | WY | 4,655 | 4,655 | 1.0% | 100.0% |
| Mills | WY | 4,584 | 4,584 | 1.0% | 100.0% |
| South Greeley | WY | 4,217 | 4,217 | 0.9% | 100.0% |
| Fox Farm-College | WY | 3,647 | 3,647 | 0.8% | 100.0% |
| Wheatland | WY | 3,475 | 3,475 | 0.8% | 100.0% |
| Newcastle | WY | 3,354 | 3,354 | 0.7% | 100.0% |
| Warren AFB | WY | 3,072 | 3,072 | 0.7% | 100.0% |
| Bar Nunn | WY | 3,019 | 3,019 | 0.7% | 100.0% |
| Evansville | WY | 2,837 | 2,837 | 0.6% | 100.0% |
| Thermopolis | WY | 2,748 | 2,748 | 0.6% | 100.0% |
| Glenrock | WY | 2,412 | 2,412 | 0.5% | 100.0% |
| Kemmerer | WY | 2,378 | 2,378 | 0.5% | 100.0% |
| Lovell | WY | 2,366 | 2,366 | 0.5% | 100.0% |
| Afton | WY | 2,280 | 2,280 | 0.5% | 100.0% |
| North Rock Springs | WY | 2,207 | 2,207 | 0.5% | 100.0% |
| Lyman | WY | 2,191 | 2,191 | 0.5% | 100.0% |
| Star Valley Ranch | WY | 2,041 | 2,041 | 0.5% | 100.0% |
| Pinedale | WY | 2,005 | 2,005 | 0.4% | 100.0% |
| Moose Wilson Road | WY | 1,821 | 1,821 | 0.4% | 100.0% |
| Saratoga | WY | 1,760 | 1,760 | 0.4% | 100.0% |
| Fort Washakie | WY | 1,759 | 1,759 | 0.4% | 100.0% |
| South Park | WY | 1,731 | 1,731 | 0.4% | 100.0% |
| Greybull | WY | 1,715 | 1,715 | 0.4% | 100.0% |
| Wright | WY | 1,660 | 1,660 | 0.4% | 100.0% |
| Antelope Valley-Crestview | WY | 1,658 | 1,658 | 0.4% | 100.0% |
| Arapahoe | WY | 1,656 | 1,656 | 0.4% | 100.0% |
| Ethete | WY | 1,553 | 1,553 | 0.3% | 100.0% |
| Wilson | WY | 1,482 | 1,482 | 0.3% | 100.0% |
| Lusk | WY | 1,401 | 1,401 | 0.3% | 100.0% |
| Alpine | WY | 1,360 | 1,360 | 0.3% | 100.0% |
| Basin | WY | 1,337 | 1,337 | 0.3% | 100.0% |
| Sleepy Hollow | WY | 1,308 | 1,308 | 0.3% | 100.0% |
| Mountain View | WY | 1,268 | 1,268 | 0.3% | 100.0% |
| Mountain View | WY | 1,268 | 1,268 | 0.3% | 100.0% |
| Ranchester | WY | 1,176 | 1,176 | 0.3% | 100.0% |
| Hoback | WY | 1,176 | 1,176 | 0.3% | 100.0% |
| Sundance | WY | 1,123 | 1,123 | 0.3% | 100.0% |
| Pine Bluffs | WY | 1,111 | 1,111 | 0.2% | 100.0% |
| Guernsey | WY | 1,094 | 1,094 | 0.2% | 100.0% |
| Rafter J Ranch | WY | 1,075 | 1,075 | 0.2% | 100.0% |
| Moorcroft | WY | 1,025 | 1,025 | 0.2% | 100.0% |
| Dubois | WY | 989 | 989 | 0.2% | 100.0% |
| Vista West | WY | 951 | 951 | 0.2% | 100.0% |
| Upton | WY | 900 | 900 | 0.2% | 100.0% |
| Cowley | WY | 859 | 859 | 0.2% | 100.0% |
| Marbleton | WY | 845 | 845 | 0.2% | 100.0% |
| Dayton | WY | 829 | 829 | 0.2% | 100.0% |
| Story | WY | 828 | 828 | 0.2% | 100.0% |
| Clearview Acres | WY | 795 | 795 | 0.2% | 100.0% |
| Reliance | WY | 714 | 714 | 0.2% | 100.0% |
| Hartrandt | WY | 693 | 693 | 0.2% | 100.0% |
| Hanna | WY | 660 | 660 | 0.2% | 100.0% |
| Nordic | WY | 602 | 602 | 0.1% | 100.0% |
| Byron | WY | 577 | 577 | 0.1% | 100.0% |
| Pine Haven | WY | 565 | 565 | 0.1% | 100.0% |
| James Town | WY | 536 | 536 | 0.1% | 100.0% |
| Lucerne | WY | 535 | 535 | 0.1% | 100.0% |
| Purple Sage | WY | 535 | 535 | 0.1% | 100.0% |
| Bear River | WY | 521 | 521 | 0.1% | 100.0% |
| Diamondville | WY | 517 | 517 | 0.1% | 100.0% |
| Shoshoni | WY | 500 | 500 | 0.1% | 100.0% |
| Cokeville | WY | 490 | 490 | 0.1% | 100.0% |
| Big Horn | WY | 490 | 490 | 0.1% | 100.0% |
| Red Butte | WY | 449 | 449 | 0.1% | 100.0% |
| La Grange | WY | 448 | 448 | 0.1% | 100.0% |
| Encampment | WY | 444 | 444 | 0.1% | 100.0% |
| Hudson | WY | 436 | 436 | 0.1% | 100.0% |
| Thayne | WY | 432 | 432 | 0.1% | 100.0% |
| Rolling Hills | WY | 426 | 426 | 0.1% | 100.0% |
| Boulder Flats | WY | 408 | 408 | 0.1% | 100.0% |
| Baggs | WY | 407 | 407 | 0.1% | 100.0% |
| Casper Mountain | WY | 401 | 401 | 0.1% | 100.0% |
| Lingle | WY | 398 | 398 | 0.1% | 100.0% |
| Osmond | WY | 397 | 397 | 0.1% | 100.0% |
| La Barge | WY | 395 | 395 | 0.1% | 100.0% |
| Alta | WY | 394 | 394 | 0.1% | 100.0% |
| Big Piney | WY | 390 | 390 | 0.1% | 100.0% |
| Burns | WY | 379 | 379 | 0.1% | 100.0% |
| Burlington | WY | 379 | 379 | 0.1% | 100.0% |
| Sinclair | WY | 361 | 361 | 0.1% | 100.0% |
| Fort Bridger | WY | 345 | 345 | 0.1% | 100.0% |
| Hulett | WY | 341 | 341 | 0.1% | 100.0% |
| Teton Village | WY | 330 | 330 | 0.1% | 100.0% |
| Auburn | WY | 328 | 328 | 0.1% | 100.0% |
| Meeteetse | WY | 316 | 316 | 0.1% | 100.0% |
| Farson | WY | 313 | 313 | 0.1% | 100.0% |
| Midwest | WY | 291 | 291 | 0.1% | 100.0% |
| Kaycee | WY | 283 | 283 | 0.1% | 100.0% |
| Eden | WY | 281 | 281 | 0.1% | 100.0% |
| Ralston | WY | 280 | 280 | 0.1% | 100.0% |
| Homa Hills | WY | 278 | 278 | 0.1% | 100.0% |
| Fairview | WY | 275 | 275 | 0.1% | 100.0% |
| Centennial | WY | 270 | 270 | 0.1% | 100.0% |
| Mammoth | WY | 263 | 263 | 0.1% | 100.0% |
| Urie | WY | 262 | 262 | 0.1% | 100.0% |
| Ten Sleep | WY | 262 | 262 | 0.1% | 100.0% |
| Alpine Northwest | WY | 244 | 244 | 0.1% | 100.0% |
| Johnstown | WY | 242 | 242 | 0.1% | 100.0% |
| Glendo | WY | 238 | 238 | 0.1% | 100.0% |
| Medicine Bow | WY | 238 | 238 | 0.1% | 100.0% |
| East Thermopolis | WY | 232 | 232 | 0.1% | 100.0% |
| Pavillion | WY | 229 | 229 | 0.1% | 100.0% |
| Rock River | WY | 224 | 224 | 0.1% | 100.0% |
| Fort Laramie | WY | 222 | 222 | 0.1% | 100.0% |
| Freedom | WY | 214 | 214 | 0.1% | 100.0% |
| Osage | WY | 208 | 208 | 0.1% | 100.0% |
| Bedford | WY | 201 | 201 | 0.1% | 100.0% |
| Bessemer Bend | WY | 199 | 199 | 0.1% | 100.0% |
| Meadow Acres | WY | 198 | 198 | 0.1% | 100.0% |
| Wamsutter | WY | 197 | 197 | 0.0% | 100.0% |
| Alpine Northeast | WY | 196 | 196 | 0.0% | 100.0% |
| Smoot | WY | 195 | 195 | 0.0% | 100.0% |
| Y-O Ranch | WY | 195 | 195 | 0.0% | 100.0% |
| Turnerville | WY | 192 | 192 | 0.0% | 100.0% |
| Brookhurst | WY | 185 | 185 | 0.0% | 100.0% |
| Superior | WY | 183 | 183 | 0.0% | 100.0% |
| Deaver | WY | 171 | 171 | 0.0% | 100.0% |
| Hill View Heights | WY | 170 | 170 | 0.0% | 100.0% |
| Boulder | WY | 170 | 170 | 0.0% | 100.0% |
| Chugwater | WY | 169 | 169 | 0.0% | 100.0% |
| Etna | WY | 164 | 164 | 0.0% | 100.0% |
| Albin | WY | 162 | 162 | 0.0% | 100.0% |
| Chugcreek | WY | 156 | 156 | 0.0% | 100.0% |
| Edgerton | WY | 155 | 155 | 0.0% | 100.0% |
| Parkman | WY | 151 | 151 | 0.0% | 100.0% |
| Daniel | WY | 150 | 150 | 0.0% | 100.0% |
| Elk Mountain | WY | 148 | 148 | 0.0% | 100.0% |
| Grover | WY | 147 | 147 | 0.0% | 100.0% |
| Frannie | WY | 146 | 146 | 0.0% | 100.0% |
| Cora | WY | 142 | 142 | 0.0% | 100.0% |
| Crowheart | WY | 141 | 141 | 0.0% | 100.0% |
| Kelly | WY | 138 | 138 | 0.0% | 100.0% |
| Yoder | WY | 133 | 133 | 0.0% | 100.0% |
| Clearmont | WY | 124 | 124 | 0.0% | 100.0% |
| Garland | WY | 115 | 115 | 0.0% | 100.0% |
| Granger | WY | 97 | 97 | 0.0% | 100.0% |
| Antelope Hills | WY | 97 | 97 | 0.0% | 100.0% |
| Robertson | WY | 97 | 97 | 0.0% | 100.0% |
| Woods Landing-Jelm | WY | 97 | 97 | 0.0% | 100.0% |
| Carpenter | WY | 94 | 94 | 0.0% | 100.0% |
| Bondurant | WY | 93 | 93 | 0.0% | 100.0% |
| Manville | WY | 91 | 91 | 0.0% | 100.0% |
| Taylor | WY | 90 | 90 | 0.0% | 100.0% |
| Manderson | WY | 89 | 89 | 0.0% | 100.0% |
| Lakeview North | WY | 84 | 84 | 0.0% | 100.0% |
| Shell | WY | 83 | 83 | 0.0% | 100.0% |
| Whiting | WY | 83 | 83 | 0.0% | 100.0% |
| Slater | WY | 80 | 80 | 0.0% | 100.0% |
| Alcova | WY | 76 | 76 | 0.0% | 100.0% |
| Kirby | WY | 75 | 75 | 0.0% | 100.0% |
| Hyattville | WY | 75 | 75 | 0.0% | 100.0% |
| Dixon | WY | 74 | 74 | 0.0% | 100.0% |
| Beulah | WY | 73 | 73 | 0.0% | 100.0% |
| Little America | WY | 68 | 68 | 0.0% | 100.0% |
| Hartville | WY | 68 | 68 | 0.0% | 100.0% |
| Riverside | WY | 66 | 66 | 0.0% | 100.0% |
| Bairoil | WY | 66 | 66 | 0.0% | 100.0% |
| Opal | WY | 64 | 64 | 0.0% | 100.0% |
| Arrowhead Springs | WY | 63 | 63 | 0.0% | 100.0% |
| McKinnon | WY | 60 | 60 | 0.0% | 100.0% |
| Jeffrey City | WY | 58 | 58 | 0.0% | 100.0% |
| Albany | WY | 55 | 55 | 0.0% | 100.0% |
| Westview Circle | WY | 52 | 52 | 0.0% | 100.0% |
| Esterbrook | WY | 52 | 52 | 0.0% | 100.0% |
| Washam | WY | 51 | 51 | 0.0% | 100.0% |
| Lonetree | WY | 49 | 49 | 0.0% | 100.0% |
| Oakley | WY | 49 | 49 | 0.0% | 100.0% |
| Hillsdale | WY | 47 | 47 | 0.0% | 100.0% |
| Orin | WY | 46 | 46 | 0.0% | 100.0% |
| Hawk Springs | WY | 45 | 45 | 0.0% | 100.0% |
| Powder River | WY | 44 | 44 | 0.0% | 100.0% |
| Lance Creek | WY | 43 | 43 | 0.0% | 100.0% |
| Arvada | WY | 43 | 43 | 0.0% | 100.0% |
| Ryan Park | WY | 38 | 38 | 0.0% | 100.0% |
| Atlantic City | WY | 37 | 37 | 0.0% | 100.0% |
| Huntley | WY | 30 | 30 | 0.0% | 100.0% |
| Arlington | WY | 25 | 25 | 0.0% | 100.0% |
| Veteran | WY | 23 | 23 | 0.0% | 100.0% |
| Van Tassell | WY | 22 | 22 | 0.0% | 100.0% |
| Fox Park | WY | 22 | 22 | 0.0% | 100.0% |
| Fontenelle | WY | 13 | 13 | 0.0% | 100.0% |
| Carter | WY | 10 | 10 | 0.0% | 100.0% |
| Owl Creek | WY | 5 | 5 | 0.0% | 100.0% |
| Lost Springs | WY | 4 | 4 | 0.0% | 100.0% |
| Table Rock | WY | 0 | 0 | 0.0% | 100.0% |
City population is shown in full. The share of each city inside 307 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 307 cover?
576,851 residents across 23 counties, counted inside the 307 boundary — a county split between codes contributes only its part.
| County | State | Population in 307 | % of area-code footprint | % of County |
|---|---|---|---|---|
| Laramie County | WY | 100,512 | 17% | 100% |
| Natrona County | WY | 79,955 | 14% | 100% |
| Campbell County | WY | 47,026 | 8% | 100% |
| Sweetwater County | WY | 42,272 | 7% | 100% |
| Fremont County | WY | 39,234 | 7% | 100% |
| Albany County | WY | 37,066 | 6% | 100% |
| Sheridan County | WY | 30,921 | 5% | 100% |
| Park County | WY | 29,624 | 5% | 100% |
| Teton County | WY | 23,331 | 4% | 100% |
| Uinta County | WY | 20,450 | 4% | 100% |
| Lincoln County | WY | 19,581 | 3% | 100% |
| Carbon County | WY | 14,537 | 3% | 100% |
| Converse County | WY | 13,751 | 2% | 100% |
| Goshen County | WY | 12,498 | 2% | 100% |
| Big Horn County | WY | 11,521 | 2% | 100% |
| Sublette County | WY | 8,728 | 2% | 100% |
| Platte County | WY | 8,605 | 1% | 100% |
| Johnson County | WY | 8,447 | 1% | 100% |
| Washakie County | WY | 7,685 | 1% | 100% |
| Crook County | WY | 7,181 | 1% | 100% |
| Weston County | WY | 6,838 | 1% | 100% |
| Hot Springs County | WY | 4,621 | 1% | 100% |
| Niobrara County | WY | 2,467 | 0% | 100% |
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 307 been reported for unwanted calls?
Yes – 1,198 unwanted-call complaints were reported to the FTC for numbers showing a 307 area code (May 29 – Aug 14, 2026).
- 74% robocalls
- ↓ 21% vs prior period
Most-reported subjects
- Other41%493
- Reducing your debt (credit cards, mortgage, student loans)39%462
- Calls pretending to be government, businesses, or family and friends5%56
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 307?
46% assigned to a telco
- 76% Landline
- 24% Wireless
- 0% Unknown
of 460 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (307)200- | Landline | Level 3 Communications |
| (307)201- | Landline | Level 3 Communications |
| (307)202- | Wireless | New Cingular Wireless Pcs |
| (307)203- | Wireless | T-Mobile Usa |
| (307)204- | Landline | Airus |
| (307)205- | Landline | Level 3 Communications |
| (307)206- | Landline | Mcimetro Access Transmission Services |
| (307)207- | Landline | Airus |
| (307)209- | Wireless | Verizon Wireless |
| (307)210- | Wireless | New Cingular Wireless Pcs |
| (307)212- | Landline | Level 3 Communications |
| (307)213- | Landline | Level 3 Communications |
| (307)214- | Wireless | Verizon Wireless |
| (307)215- | Landline | At&T |
| (307)216- | Wireless | New Cingular Wireless Pcs |
| (307)217- | Wireless | New Cingular Wireless Pcs |
| (307)218- | Landline | Onvoy |
| (307)219- | Landline | Centurylink Communications |
| (307)220- | Wireless | T-Mobile Usa |
| (307)221- | Wireless | T-Mobile Usa |
| (307)222- | Landline | Level 3 Communications |
| (307)223- | Landline | Level 3 Communications |
| (307)224- | Landline | Level 3 Communications |
| (307)225- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)226- | Landline | Mcimetro Access Transmission Services |
| (307)227- | Landline | Centurylink Communications |
| (307)228- | Landline | Bandwidth.Com Clec |
| (307)229- | Landline | Gold Star Communications |
| (307)230- | Landline | Bandwidth.Com Clec |
| (307)231- | Wireless | Verizon Wireless |
| (307)232- | Landline | Qwest |
| (307)233- | Landline | Qwest |
| (307)234- | Landline | Qwest |
| (307)235- | Landline | Qwest |
| (307)236- | Wireless | New Cingular Wireless Pcs |
| (307)237- | Landline | Qwest |
| (307)238- | Wireless | New Cingular Wireless Pcs |
| (307)239- | Landline | Gold Star Communications |
| (307)240- | Wireless | Verizon Wireless |
| (307)241- | Wireless | New Cingular Wireless Pcs |
| (307)242- | Landline | Qwest |
| (307)243- | Landline | Onvoy |
| (307)244- | Landline | Silver Star Tel Co |
| (307)245- | Landline | Rt Communications |
| (307)246- | Landline | Rt Communications |
| (307)247- | Wireless | New Cingular Wireless Pcs |
| (307)248- | Wireless | Verizon Wireless |
| (307)249- | Landline | Telnyx |
| (307)250- | Wireless | Verizon Wireless |
| (307)251- | Wireless | Verizon Wireless |
| (307)252- | Landline | Uintah Basin Electronic Telecommunications |
| (307)253- | Landline | Qwest |
| (307)254- | Wireless | Verizon Wireless |
| (307)255- | Landline | Uintah Basin Electronic Telecommunications |
| (307)256- | Landline | Metropcs |
| (307)257- | Landline | Level 3 Communications |
| (307)258- | Wireless | Verizon Wireless |
| (307)259- | Wireless | Verizon Wireless |
| (307)260- | Landline | Union Telephone |
| (307)261- | Landline | Qwest |
| (307)262- | Wireless | Verizon Wireless |
| (307)263- | Wireless | Csc Wireless |
| (307)264- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)265- | Landline | Qwest |
| (307)266- | Landline | Qwest |
| (307)267- | Wireless | New Cingular Wireless Pcs |
| (307)268- | Landline | Qwest |
| (307)269- | Landline | Level 3 Communications |
| (307)270- | Landline | Union Telephone |
| (307)271- | Landline | Level 3 Communications |
| (307)272- | Wireless | Verizon Wireless |
| (307)273- | Landline | Centurylink |
| (307)274- | Landline | Mcimetro Access Transmission Services |
| (307)275- | Wireless | Verizon Wireless |
| (307)276- | Landline | Centurylink |
| (307)277- | Wireless | Verizon Wireless |
| (307)278- | Landline | Level 3 Communications |
| (307)279- | Landline | All West Communications |
| (307)280- | Landline | Union Telephone |
| (307)281- | Wireless | Verizon Wireless |
| (307)282- | Wireless | Verizon Wireless |
| (307)283- | Landline | Range Tel Coop |
| (307)284- | Landline | Silver Star Telephone Company |
| (307)285- | Landline | Airus |
| (307)286- | Wireless | Verizon Wireless |
| (307)287- | Wireless | Verizon Wireless |
| (307)288- | Landline | Level 3 Communications |
| (307)290- | Wireless | New Cingular Wireless Pcs |
| (307)291- | Landline | Commio |
| (307)292- | Landline | Hd Carrier |
| (307)293- | Landline | Onvoy |
| (307)296- | Landline | Onvoy |
| (307)297- | Landline | Uintah Basin Electronic Telecommunications |
| (307)298- | Landline | Level 3 Communications |
| (307)299- | Wireless | New Cingular Wireless Pcs |
| (307)300- | Landline | Onvoy |
| (307)302- | Landline | Bandwidth.Com Clec |
| (307)303- | Landline | Bandwidth.Com Clec |
| (307)304- | Wireless | New Cingular Wireless Pcs |
| (307)305- | Wireless | New Cingular Wireless Pcs |
| (307)306- | Landline | Stratus Networks |
| (307)309- | Wireless | New Cingular Wireless Pcs |
| (307)310- | Landline | Onvoy Spectrum |
| (307)312- | Landline | Bandwidth.Com Clec |
| (307)313- | Landline | Level 3 Communications |
| (307)314- | Landline | Bandwidth.Com Clec |
| (307)315- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)316- | Landline | Onvoy |
| (307)317- | Landline | Onvoy |
| (307)318- | Landline | Bandwidth.Com Clec |
| (307)319- | Wireless | New Cingular Wireless Pcs |
| (307)320- | Landline | Union Telephone |
| (307)321- | Wireless | Verizon Wireless |
| (307)322- | Landline | Qwest |
| (307)323- | Landline | Radiantiq |
| (307)324- | Landline | Qwest |
| (307)325- | Landline | Union Tel. Co. |
| (307)326- | Landline | Union Tel. Co. |
| (307)327- | Landline | Union Tel. Co. |
| (307)328- | Landline | Qwest |
| (307)329- | Landline | Union Telephone |
| (307)330- | Landline | Union Telephone |
| (307)331- | Wireless | Verizon Wireless |
| (307)332- | Landline | Qwest |
| (307)333- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)334- | Landline | Qwest |
| (307)335- | Landline | Qwest |
| (307)336- | Landline | Onvoy |
| (307)337- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)338- | Wireless | Verizon Wireless |
| (307)339- | Landline | Union Telephone |
| (307)340- | Wireless | Verizon Wireless |
| (307)341- | Landline | Project Tel. Co. |
| (307)342- | Landline | Onvoy |
| (307)343- | Wireless | Verizon Wireless |
| (307)344- | Landline | Qwest |
| (307)345- | Landline | Union Telephone |
| (307)346- | Wireless | Dish Wireless |
| (307)347- | Landline | Rt Communications |
| (307)348- | Landline | Union Tel. Co. |
| (307)349- | Wireless | Verizon Wireless |
| (307)350- | Landline | Union Telephone |
| (307)351- | Wireless | New Cingular Wireless Pcs |
| (307)352- | Landline | Qwest |
| (307)353- | Landline | Silver Star Communications |
| (307)354- | Landline | Union Telephone |
| (307)355- | Wireless | T-Mobile Usa |
| (307)356- | Landline | Union Tel. Co. |
| (307)358- | Landline | Qwest |
| (307)359- | Wireless | Verizon Wireless |
| (307)360- | Landline | Union Telephone |
| (307)361- | Wireless | New Cingular Wireless Pcs |
| (307)362- | Landline | Qwest |
| (307)363- | Landline | Bandwidth.Com Clec |
| (307)364- | Landline | Bandwidth.Com Clec |
| (307)365- | Wireless | New Cingular Wireless Pcs |
| (307)366- | Landline | Tri-County Tel. Assn. |
| (307)367- | Landline | Centurylink |
| (307)368- | Wireless | Verizon Wireless |
| (307)369- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)370- | Wireless | Verizon Wireless |
| (307)371- | Wireless | Verizon Wireless |
| (307)372- | Landline | Onvoy |
| (307)373- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)374- | Landline | Vonage America |
| (307)375- | Landline | Rt Communications |
| (307)376- | Wireless | New Cingular Wireless Pcs |
| (307)377- | Landline | Union Telephone |
| (307)378- | Landline | Union Tel. Co. |
| (307)379- | Landline | Centurylink |
| (307)380- | Landline | Union Telephone |
| (307)381- | Landline | Bandwidth.Com Clec |
| (307)382- | Landline | Qwest |
| (307)383- | Landline | Dubois Tel. Exch. |
| (307)384- | Landline | Commio |
| (307)386- | Landline | Union Tel. Co. |
| (307)387- | Landline | Bandwidth.Com Clec |
| (307)388- | Wireless | New Cingular Wireless Pcs |
| (307)389- | Wireless | Verizon Wireless |
| (307)390- | Landline | Union Telephone |
| (307)391- | Wireless | New Cingular Wireless Pcs |
| (307)392- | Landline | Level 3 Communications |
| (307)393- | Landline | Airus |
| (307)394- | Wireless | T-Mobile Usa |
| (307)395- | Landline | Bandwidth.Com Clec |
| (307)396- | Landline | Bandwidth.Com Clec |
| (307)397- | Wireless | New Cingular Wireless Pcs |
| (307)398- | Wireless | New Cingular Wireless Pcs |
| (307)399- | Wireless | Verizon Wireless |
| (307)400- | Landline | Terra Nova Telecom |
| (307)401- | Wireless | New Cingular Wireless Pcs |
| (307)402- | Wireless | New Cingular Wireless Pcs |
| (307)403- | Landline | Bandwidth.Com Clec |
| (307)404- | Wireless | New Cingular Wireless Pcs |
| (307)407- | Landline | Onvoy |
| (307)408- | Wireless | New Cingular Wireless Pcs |
| (307)409- | Wireless | New Cingular Wireless Pcs |
| (307)410- | Wireless | T-Mobile Usa |
| (307)412- | Landline | At&T |
| (307)413- | Wireless | New Cingular Wireless Pcs |
| (307)414- | Landline | Airus |
| (307)415- | Landline | Nuso |
| (307)417- | Landline | Onvoy |
| (307)419- | Wireless | T-Mobile Usa |
| (307)421- | Wireless | Verizon Wireless |
| (307)422- | Landline | Chugwater Tel. Co. |
| (307)423- | Landline | Bandwidth.Com Clec |
| (307)425- | Landline | Advanced Communications Technology |
| (307)426- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)429- | Landline | Bandwidth.Com Clec |
| (307)431- | Wireless | Verizon Wireless |
| (307)432- | Landline | Qwest |
| (307)433- | Landline | Qwest |
| (307)436- | Landline | Qwest |
| (307)437- | Landline | Rt Communications |
| (307)438- | Wireless | Verizon Wireless |
| (307)439- | Landline | Level 3 Communications |
| (307)440- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)441- | Wireless | Verizon Wireless |
| (307)443- | Landline | Commio |
| (307)444- | Landline | All West/Wyoming |
| (307)445- | Landline | Onvoy |
| (307)447- | Landline | Level 3 Communications |
| (307)448- | Wireless | Verizon Wireless |
| (307)450- | Landline | Union Telephone |
| (307)455- | Landline | Dubois Tel. Exch. |
| (307)456- | Landline | Onvoy |
| (307)457- | Landline | Rt Communications |
| (307)458- | Wireless | Dish Wireless |
| (307)459- | Landline | Level 3 Communications |
| (307)460- | Landline | Level 3 Communications |
| (307)461- | Landline | Level 3 Communications |
| (307)462- | Landline | Level 3 Communications |
| (307)463- | Landline | Level 3 Communications |
| (307)464- | Landline | Qwest |
| (307)465- | Landline | Rt Communications |
| (307)466- | Wireless | Verizon Wireless |
| (307)467- | Landline | Rt Communications |
| (307)468- | Landline | Rt Communications |
| (307)469- | Landline | Tri-County Tel. Assn. |
| (307)472- | Landline | Qwest |
| (307)473- | Landline | Qwest |
| (307)475- | Landline | Telnyx |
| (307)477- | Landline | Union Telephone |
| (307)480- | Wireless | New Cingular Wireless Pcs |
| (307)481- | Landline | Onvoy |
| (307)486- | Landline | Dubois Tel. Exch. |
| (307)487- | Wireless | Verizon Wireless |
| (307)488- | Landline | Bandwidth.Com Clec |
| (307)489- | Wireless | New Cingular Wireless Pcs |
| (307)497- | Landline | All West Communications |
| (307)500- | Landline | Onvoy |
| (307)509- | Landline | Bandwidth.Com Clec |
| (307)514- | Landline | Bresnan Broadband Of Wyoming, Llc - Wy [charter] |
| (307)520- | Landline | Union Telephone |
| (307)522- | Landline | Airus |
| (307)527- | Landline | Qwest |
| (307)529- | Landline | Ymax Communications |
| (307)532- | Landline | Centurylink West |
| (307)533- | Wireless | Verizon Wireless |
| (307)534- | Landline | Centurylink West |
| (307)537- | Landline | Centurylink |
| (307)540- | Landline | Union Telephone |
| (307)541- | Landline | Union Telephone |
| (307)543- | Landline | Qwest |
| (307)544- | Landline | Rt Communications |
| (307)545- | Landline | Qwest |
| (307)547- | Landline | Rt Communications |
| (307)548- | Landline | Tri-County Tel. Assn. |
| (307)549- | Landline | Union Telephone |
| (307)554- | Landline | Onvoy |
| (307)556- | Landline | Onvoy |
| (307)567- | Landline | Union Telephone |
| (307)568- | Landline | Tri-County Tel. Assn. |
| (307)575- | Wireless | Verizon Wireless |
| (307)576- | Landline | Silver Star Communications |
| (307)577- | Landline | Qwest |
| (307)578- | Landline | Qwest |
| (307)586- | Landline | Tri Tel |
| (307)587- | Landline | Qwest |
| (307)600- | Landline | Union Telephone |
| (307)620- | Wireless | Verizon Wireless |
| (307)621- | Wireless | Verizon Wireless |
| (307)622- | Wireless | New Cingular Wireless Pcs |
| (307)624- | Wireless | New Cingular Wireless Pcs |
| (307)629- | Wireless | New Cingular Wireless Pcs |
| (307)630- | Wireless | Verizon Wireless |
| (307)631- | Wireless | Verizon Wireless |
| (307)632- | Landline | Qwest |
| (307)633- | Landline | Qwest |
| (307)634- | Landline | Qwest |
| (307)635- | Landline | Qwest |
| (307)637- | Landline | Qwest |
| (307)638- | Landline | Qwest |
| (307)640- | Wireless | New Cingular Wireless Pcs |
| (307)643- | Landline | Qwest |
| (307)645- | Landline | Project Tel. Co. |
| (307)649- | Landline | Rt Communications |
| (307)650- | Landline | Airus |
| (307)654- | Landline | Silver Star Tel Co |
| (307)655- | Landline | Qwest |
| (307)656- | Landline | Gold Star Communications |
| (307)660- | Wireless | New Cingular Wireless Pcs |
| (307)663- | Landline | Golden West Telecomm |
| (307)664- | Landline | Tri-County Tel. Assn. |
| (307)666- | Landline | Fractel |
| (307)667- | Landline | Onvoy |
| (307)670- | Wireless | Verizon Wireless |
| (307)672- | Landline | Qwest |
| (307)673- | Landline | Qwest |
| (307)674- | Landline | Qwest |
| (307)675- | Landline | Advanced Communications Technology |
| (307)677- | Wireless | Verizon Wireless |
| (307)679- | Wireless | Verizon Wireless |
| (307)680- | Wireless | New Cingular Wireless Pcs |
| (307)681- | Landline | Advanced Communications Technology |
| (307)682- | Landline | Qwest |
| (307)683- | Landline | Qwest |
| (307)684- | Landline | Qwest |
| (307)685- | Landline | Qwest |
| (307)686- | Landline | Qwest |
| (307)687- | Landline | Qwest |
| (307)688- | Landline | Qwest |
| (307)689- | Wireless | Verizon Wireless |
| (307)690- | Wireless | Verizon Wireless |
| (307)696- | Wireless | New Cingular Wireless Pcs |
| (307)699- | Wireless | Verizon Wireless |
| (307)701- | Landline | Union Telephone |
| (307)702- | Landline | Union Telephone |
| (307)703- | Landline | Union Telephone |
| (307)704- | Landline | Union Telephone |
| (307)705- | Landline | Union Telephone |
| (307)706- | Landline | Union Telephone |
| (307)707- | Landline | Union Telephone |
| (307)708- | Landline | Union Telephone |
| (307)709- | Landline | Union Telephone |
| (307)710- | Landline | Union Telephone |
| (307)712- | Landline | Union Telephone |
| (307)713- | Landline | Union Telephone |
| (307)714- | Landline | Union Telephone |
| (307)715- | Landline | Union Telephone |
| (307)716- | Landline | Union Telephone |
| (307)717- | Landline | Union Telephone |
| (307)718- | Landline | Union Telephone |
| (307)719- | Landline | Union Telephone |
| (307)720- | Landline | Union Telephone |
| (307)721- | Landline | Qwest |
| (307)722- | Landline | Union Telephone |
| (307)723- | Landline | Union Telephone |
| (307)724- | Landline | Union Telephone |
| (307)727- | Landline | Union Telephone |
| (307)728- | Landline | Union Telephone |
| (307)730- | Landline | Union Telephone |
| (307)731- | Landline | Union Telephone |
| (307)732- | Landline | Qwest |
| (307)733- | Landline | Qwest |
| (307)734- | Landline | Qwest |
| (307)735- | Landline | Qwest |
| (307)736- | Landline | Range Tel Coop |
| (307)737- | Landline | Range Tel Coop |
| (307)738- | Landline | Rt Communications |
| (307)739- | Landline | Qwest |
| (307)740- | Landline | Union Telephone |
| (307)741- | Landline | Union Telephone |
| (307)742- | Landline | Qwest |
| (307)744- | Landline | Union Telephone |
| (307)745- | Landline | Qwest |
| (307)746- | Landline | Rt Communications |
| (307)747- | Landline | Union Telephone |
| (307)749- | Landline | Union Telephone |
| (307)750- | Landline | Range Tel Coop |
| (307)751- | Wireless | New Cingular Wireless Pcs |
| (307)752- | Wireless | Verizon Wireless |
| (307)754- | Landline | Qwest |
| (307)755- | Landline | Qwest |
| (307)756- | Landline | Rt Communications |
| (307)757- | Landline | At&T |
| (307)758- | Landline | Range Tel Coop |
| (307)759- | Landline | Union Telephone |
| (307)760- | Wireless | Verizon Wireless |
| (307)761- | Wireless | New Cingular Wireless Pcs |
| (307)762- | Landline | Tri-County Tel. Assn. |
| (307)763- | Wireless | Verizon Wireless |
| (307)764- | Landline | Tri Tel |
| (307)765- | Landline | Tri-County Tel. Assn. |
| (307)766- | Landline | Qwest |
| (307)770- | Landline | All West/Wyoming |
| (307)771- | Landline | Qwest |
| (307)772- | Landline | Qwest |
| (307)773- | Landline | Qwest |
| (307)774- | Landline | Gold Star Communications |
| (307)775- | Landline | Qwest |
| (307)776- | Landline | Vonage America |
| (307)777- | Landline | Qwest |
| (307)778- | Landline | Qwest |
| (307)779- | Landline | Union Telephone |
| (307)780- | Landline | Union Telephone |
| (307)782- | Landline | Union Tel. Co. |
| (307)783- | Landline | Qwest |
| (307)785- | Landline | Onvoy |
| (307)786- | Landline | Union Tel. Co. |
| (307)787- | Landline | Union Tel. Co. |
| (307)788- | Landline | Centurylink West |
| (307)789- | Landline | Qwest |
| (307)790- | Landline | Union Telephone |
| (307)797- | Wireless | New Cingular Wireless Pcs |
| (307)798- | Landline | Union Telephone |
| (307)799- | Landline | Union Telephone |
| (307)800- | Landline | Onvoy |
| (307)823- | Landline | Teleport Communications America Wy |
| (307)828- | Landline | Qwest |
| (307)829- | Landline | Centurylink Communications |
| (307)834- | Landline | Centurylink West |
| (307)836- | Landline | Centurylink West |
| (307)837- | Landline | Centurylink West |
| (307)840- | Wireless | Verizon Wireless |
| (307)849- | Landline | Qwest |
| (307)850- | Landline | Union Telephone |
| (307)851- | Wireless | Verizon Wireless |
| (307)854- | Landline | Advanced Communications Technology |
| (307)855- | Landline | Qwest |
| (307)856- | Landline | Qwest |
| (307)857- | Landline | Qwest |
| (307)858- | Landline | Union Telephone |
| (307)859- | Landline | Centurylink |
| (307)864- | Landline | Rt Communications |
| (307)867- | Landline | Tri-County Tel. Assn. |
| (307)868- | Landline | Tri-County Tel. Assn. |
| (307)870- | Landline | Union Telephone |
| (307)871- | Wireless | Verizon Wireless |
| (307)872- | Landline | Qwest |
| (307)874- | Landline | Union Tel. Co. |
| (307)875- | Landline | Qwest |
| (307)876- | Landline | Rt Communications |
| (307)877- | Landline | Qwest |
| (307)878- | Landline | Range Tel Coop |
| (307)880- | Landline | Gold Star Communications |
| (307)881- | Landline | Advanced Communications Technology |
| (307)883- | Landline | Silver Star Tel Co |
| (307)884- | Landline | Union Telephone |
| (307)885- | Landline | Silver Star Tel Co |
| (307)886- | Landline | Qwest |
| (307)887- | Landline | Gold Star Communications |
| (307)888- | Landline | Telnyx |
| (307)890- | Landline | Union Telephone |
| (307)895- | Landline | Twilio International |
| (307)896- | Landline | Qwest |
| (307)899- | Wireless | New Cingular Wireless Pcs |
| (307)900- | Landline | Fractel |
| (307)910- | Landline | Radiantiq |
| (307)920- | Wireless | T-Mobile Usa |
| (307)921- | Wireless | Verizon Wireless |
| (307)922- | Landline | At&T |
| (307)939- | Landline | Qwest |
| (307)941- | Wireless | Verizon Wireless |
| (307)949- | Wireless | Verizon Wireless |
| (307)977- | Landline | Union Telephone |
| (307)995- | Landline | Qwest |
| (307)996- | Landline | Onvoy |
| (307)999- | Landline | Telnyx |
| No prefixes match “”. | ||
Frequently Asked Questions about the 307 Area Code
Who called me from a 307 number?
A 307 number is assigned to Cheyenne, Wyoming, so a call may come from there. But caller ID is easy to fake, and scammers often spoof a local 307 code to look nearby, so a 307 number doesn't prove the caller is local. Recently, 1,198 unwanted-call complaints were reported to the FTC for numbers showing the 307 code (74% flagged as robocalls). If you don't recognize the number, let it go to voicemail; a real caller will leave a message.
Is 307 a scam area code?
No area code is a scam on its own. 307 is a normal, officially assigned code for Cheyenne, Wyoming. Spam callers spoof local codes to raise the odds you answer, so 307 on your caller ID says nothing about who is really calling. Recently, 1,198 unwanted-call complaints were reported to the FTC for numbers showing the 307 code (74% flagged as robocalls). Judge the call itself, not the area code.
Why do I keep getting calls from the 307 area code?
Repeated calls from different 307 numbers are usually spoofing: a robocaller rotates through 307 numbers so each call looks local and slips past simple blocks. Recently, 1,198 unwanted-call complaints were reported to the FTC for numbers showing the 307 code (74% 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 307 number?
If you aren't expecting a 307 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 307 area code?
Block a single 307 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 307 code also stops legitimate local calls, so use it only as a last resort.
Where is area code 307?
Area code 307 covers Cheyenne and the surrounding area in Wyoming, spanning 203 cities with about 576,851 residents. No other code overlays this region, so 307 alone identifies the area.
When did area code 307 go into service?
Area code 307 went into service on January 1, 1947.
Is 307 a real area code?
Yes. 307 is an active code in the North American Numbering Plan, assigned by NANPA and in service for Cheyenne, Wyoming. A real code can still show up on spoofed spam calls, so treat unknown 307 calls with normal caution.
What timezone is the 307 area code in?
The 307 area code is in the Mountain Time (MT). Because a number can be kept when someone moves or switches to VoIP, a specific 307 caller may not be in that zone.
How do I call a 307 number from abroad?
From outside the US, dial your country's exit code, then 1 (the US country code), then 307 and the seven-digit number. From a mobile phone you can usually just enter +1 307 followed by the number and let the phone add the exit code for you.