307 area code
Area code 307 is a telephone area code that covers the entire state of Wyoming in the United States. It was one of the original area codes established in 1947 and has not changed since then. Area code 307 serves cities and communities throughout Wyoming, including Cheyenne, Casper, Laramie, Gillette, Rock Springs, and many others.
| State | Wyoming |
| Major City | Cheyenne |
| Timezone | Mountain Time Zone (MT) |
What time zone is area code 307?
Area code 307 covers whole Wyoming which is primarily in the Mountain Time Zone (MT). The Mountain Time Zone is typically UTC-7 during Standard Time (MST) and UTC-6 during Daylight Saving Time (MDT) when daylight saving time is observed.
Note that the start and end dates of daylight saving time can change
History
Area code 307 was one of the original area codes established when the North American Numbering Plan (NANP) was introduced in 1947. At that time, it was one of the few area codes in the western United States. Over the years, as population growth and increased demand for telephone numbers occurred, new area codes were introduced in nearby states, but 307 has remained unique to Wyoming.
Nearby Area Codes to 307
This table provides a quick overview of nearby area codes, their locations, and some historical context for each.
| Area Code | Location | History and Details |
|---|---|---|
| 303 | Denver, Colorado | South and Southwest of Wyoming. Original area code since 1947. South of Wyoming. |
| 435 | Southern Utah | Southwest of Wyoming. Introduced in 1997, covers the south. Southwest of Wyoming. |
| 970 | Northern Colorado | South of Wyoming. Introduced in 1995 as an overlay for area code 303 to address the increasing demand for phone numbers in northern Colorado. |
| 308 | Western Nebraska | East of Wyoming. Area code 308 covers the western part of Nebraska. Original area codes designated in 1947. |
| 801/385 | Salt Lake City, Utah | West and southwest of Wyoming. Original code since 1947, serves the capital Salt Lake City and much of Utah. |
| 970 | Northern Colorado | South of Wyoming. Introduced in 1995 as an overlay for area code 303 to meet growing demand in northern Colorado. |
| 406 | Montana | South of Wyoming. Area code 406 has been serving the entire state of Montana since its inception in 1947. |
| 605 | South Dakota | East of Wyoming. Area code 605 has served the entirety of South Dakota since 1947, encompassing the state's various regions. |
Counties in Area Code 307
Area code 307 covers a total of 23 counties in the state of Wyoming. These counties include a diverse range of landscapes and communities, from the eastern plains to the western mountains.
| County | Total Population | % of 307 | Details |
|---|---|---|---|
| Albany County | Approximately 38,500 | 4.6% | Albany County, located in the southeastern part of Wyoming, is partially encompassed by area code 307. It is home to the city of Laramie and the University of Wyoming. |
| Big Horn County | Approximately 11,000 | Not within 307 | Big Horn County is not entirely within area code 307. Part of it falls under area code 406, which serves Montana. |
| Campbell County | Approximately 46,000 | 5.5% | Campbell County, in the northeastern part of Wyoming, is partially covered by area code 307. It includes the city of Gillette. |
| Carbon County | Approximately 15,600 | 1.9% | Carbon County, located in southern Wyoming, is partially encompassed by area code 307. |
| Converse County | Approximately 14,500 | 1.7% | Converse County, situated in eastern Wyoming, is partially covered by area code 307. |
| Crook County | Approximately 7,000 | 0.8% | Crook County, in the northeastern part of Wyoming, is partially within area code 307. |
| Fremont County | Approximately 39,200 | 4.7% | Fremont County, located in central Wyoming, is partially encompassed by area code 307. |
| Goshen County | Approximately 13,200 | 1.6% | Goshen County, in southeastern Wyoming, is partially covered by area code 307. |
| Hot Springs County | Approximately 4,800 | 0.6% | Hot Springs County, in north-central Wyoming, is partially within area code 307. |
| Johnson County | Approximately 8,500 | 1.0% | Johnson County, in northeastern Wyoming, is partially covered by area code 307. |
| Laramie County | Approximately 99,600 | 11.9% | Laramie County, in southeastern Wyoming and home to the state capital Cheyenne, is partially encompassed by area code 307. |
| Lincoln County | Approximately 20,800 | 2.5% | Lincoln County, located in western Wyoming, is partially encompassed by area code 307. |
| Natrona County | Approximately 80,000 | 9.6% | Natrona County, located in central Wyoming, is partially encompassed by area code 307. It includes the city of Casper. |
| Niobrara County | Approximately 2,400 | 0.3% | Niobrara County, in the eastern part of Wyoming, is partially covered by area code 307. |
| Park County | Approximately 30,000 | 3.6% | Park County, located in northwestern Wyoming, is partially encompassed by area code 307. It includes the town of Cody. |
| Platte County | Approximately 8,600 | 1.0% | Platte County, in southeastern Wyoming, is partially covered by area code 307. |
| Sheridan County | Approximately 30,100 | 3.6% | Sheridan County, located in north-central Wyoming, is partially encompassed by area code 307. It includes the city of Sheridan. |
| Sublette County | Approximately 10,000 | 1.2% | Sublette County, in western Wyoming, is partially covered by area code 307. |
| Sweetwater County | Approximately 42,500 | 5.1% | Sweetwater County, located in southwestern Wyoming, is partially encompassed by area code 307. It includes the city of Rock Springs. |
| Teton County | Approximately 23,500 | 2.8% | Teton County, in northwestern Wyoming, is partially covered by area code 307. It includes the famous Jackson Hole area. |
| Uinta County | Approximately 20,900 | 2.5% | Uinta County, located in southwestern Wyoming, is partially encompassed by area code 307. It includes the city of Evanston. |
| Washakie County | Approximately 7,600 | 0.9% | Washakie County, in north-central Wyoming, is partially covered by area code 307. |
| Weston County | Approximately 6,900 | 0.8% | Weston County, in the northeastern part of Wyoming, is partially within area code 307. |
Cities in Area Code 307
Here are the some of the major cities and towns in Wyoming covered by area code 307 include Cheyenne, Casper, Laramie, Gillette, Rock Springs, Sheridan, Jackson, Cody, and Evanston, among others. There are many more smaller towns and communities within this area code as well.
| City | Total Population | Details |
|---|---|---|
| Cheyenne | Approximately 64,235 | Wyoming's capital city, known for its Old West charm and Cheyenne Frontier Days rodeo. |
| Casper | Approximately 58,498 | Wyoming's second-largest city, nestled along the North Platte River and offering outdoor recreation. |
| Laramie | Approximately 32,381 | Home to the University of Wyoming, Laramie combines a college-town vibe with scenic beauty. |
| Gillette | Approximately 32,857 | Known as the "Energy Capital of the Nation" due to its ties to the coal and energy industries. |
| Rock Springs | Approximately 23,350 | A city rich in history with a diverse community and close proximity to natural wonders. |
| Sheridan | Approximately 17,844 | Nestled in the Bighorn Mountains, Sheridan boasts a vibrant arts scene and western heritage. |
| Green River | Approximately 12,000 | Located along the Green River, offering outdoor activities and a friendly community. |
| Evanston | Approximately 11,927 | Near the Utah border, Evanston offers a mix of outdoor adventure and historical charm. |
| Riverton | Approximately 10,996 | Located in central Wyoming, offering access to the Wind River Range and outdoor adventures. |
| Jackson | Approximately 10,429 | Nestled in the Teton Mountains, known for its stunning scenery and outdoor recreation. |
| Rawlins | Approximately 9,203 | Located in south-central Wyoming, a hub for travelers and outdoor enthusiasts. |
| Lander | Approximately 7,674 | Situated near the Wind River Mountains, known for its outdoor recreation opportunities. |
| Powell | Approximately 6,468 | Located in northwestern Wyoming, offering access to Yellowstone National Park. |
| Douglas | Approximately 6,292 | In east-central Wyoming, known for its Western heritage and history. |
| Torrington | Approximately 6,683 | Located in southeastern Wyoming, known for its friendly community. |
| Worland | Approximately 5,350 | Situated in north-central Wyoming, offering a glimpse of the Bighorn Mountains. |
| Buffalo | Approximately 4,584 | Located in the foothills of the Bighorn Mountains, known for its Western history. |
| Thermopolis | Approximately 2,868 | Known for its hot springs and therapeutic mineral waters in north-central Wyoming. |
| Greybull | Approximately 1,847 | A small town in northwestern Wyoming, close to the Bighorn Mountains. |
| Lovell | Approximately 2,360 | Located in northern Wyoming, known for its proximity to Bighorn Canyon. |
| Afton | Approximately 1,911 | Nestled in western Wyoming, famous for its elk antler arches. |
| Wheatland | Approximately 3,652 | Located in southeastern Wyoming, known for its agricultural heritage. |
| Mills | Approximately 3,765 | A town in central Wyoming, part of the Casper metropolitan area. |
| Newcastle | Approximately 3,532 | Located in northeastern Wyoming, known for its coal mining history. |
| Pinedale | Approximately 2,030 | Nestled in western Wyoming, a gateway to outdoor adventure in the Wind River Range. |
| Glenrock | Approximately 2,573 | Located in central Wyoming, known for its small-town charm. |
| Thayne | Approximately 377 | A small town in western Wyoming, offering a peaceful atmosphere. |
| Moorcroft | Approximately 1,037 | Located in northeastern Wyoming, known for its ranching community. |
| Hanna | Approximately 841 | A town in south-central Wyoming, rich in mining history. |
| Wright | Approximately 1,233 | Located in northeastern Wyoming, closely tied to the energy industry. |
| Shoshoni | Approximately 649 | A small town in central Wyoming, known for its historical sites. |
| Basin | Approximately 1,158 | Located in north-central Wyoming, offering access to the Big Horn Mountains. |
| Diamondville | Approximately 732 | A small town in southwestern Wyoming, historically tied to coal mining. |
| Hudson | Approximately 459 | Located in central Wyoming, offering a rural and quiet setting. |
| Alpine | Approximately 828 | Nestled in western Wyoming, known for its proximity to the Snake River and outdoor activities. |
| Pine Bluffs | Approximately 1,129 | Located in southeastern Wyoming, near the Nebraska border. |
| Guernsey | Approximately 1,103 | Located in southeastern Wyoming, known for its historic sites and proximity to the North Platte River. |
| Mountain View | Approximately 1,288 | Nestled in southwestern Wyoming, offering picturesque views of the Uinta Mountains. |
| Cowley | Approximately 655 | A small town in northern Wyoming, known for its community spirit. |
| Big Piney | Approximately 521 | Located in western Wyoming, near the Bridger-Teton National Forest. |
| Shelley | Approximately 4,445 | A town in eastern Idaho, close to the Wyoming border and the Snake River. |
| Burlington | Approximately 288 | A small town in northern Wyoming, offering a peaceful rural atmosphere. |
| Lyman | Approximately 2,409 | Located in southwestern Wyoming, known for its outdoor recreational opportunities. |
| Dubois | Approximately 1,004 | A picturesque town in northwestern Wyoming, gateway to the Wind River Mountains. |
| Upton | Approximately 1,065 | Located in northeastern Wyoming, known for its ranching heritage. |
| La Barge | Approximately 551 | A small town in southwestern Wyoming, offering a tranquil environment. |
| Glendo | Approximately 207 | Located in southeastern Wyoming, known for Glendo State Park and reservoir. |
| Encampment | Approximately 444 | A small town in south-central Wyoming, close to the Medicine Bow National Forest. |
| Hanna | Approximately 841 | A town in south-central Wyoming, rich in mining history. |
| Hulett | Approximately 396 | Located in northeastern Wyoming, near Devils Tower National Monument. |
| Diamondville | Approximately 732 | A small town in southwestern Wyoming, historically tied to coal mining. |
Largest telephone carriers in area code 307
This table provides a quick overview of nearby area codes, their locations, and some historical context for each.
| Carrier | Landline Market Share | Wireless Market Share |
|---|---|---|
| Qwest Corporation | 23% | 17% |
| Level 3 | 5% | 14% |
| Rt | 5% | 7% |
| Union Telephone | 3% | 1% |
| Bresnan Broadband | 2% | 1% |
| Centurylink West | 2% | 1% |
| Centurylink | 2% | 1% |
| Other | 16% | 58% |
Prefixes in Area Code 307
Below is the list of some of Prefixes in area code 307
| Prefix | Usage | Primary City | Carrier | Introduction Date |
|---|---|---|---|---|
| (307) 200- | Landline | Jackson | Level 3 Communications | 08/16/2002 |
| (307) 201- | Landline | Jackson | Level 3 Communications | 01/07/2003 |
| (307) 202- | Wireless | Powell | Cingular Wireless | 01/21/2003 |
| (307) 203- | Wireless | Jackson | Sprint | 03/14/2001 |
| (307) 206- | Landline | Lander | MCI Metro ATS | 12/05/2013 |
| (307) 212- | Landline | Rock Springs | Level 3 Communications | 07/16/2002 |
| (307) 213- | Landline | Cody | Level 3 Communications | 07/16/2002 |
| (307) 214- | Wireless | Cheyenne | Verizon Wireless | 01/06/2003 |
| (307) 215- | Landline | Casper | AT&T; Local | 07/26/2001 |
| (307) 216- | Wireless | Manville | Cingular Wireless | 10/09/2002 |
| (307) 217- | Wireless | Buffalo | Cingular Wireless | 10/09/2002 |
| (307) 220- | Wireless | Cheyenne | T-mobile USA | 02/27/1999 |
| (307) 221- | Wireless | Cheyenne | Sprint | 06/13/2000 |
| (307) 222- | Landline | Cheyenne | Level 3 Communications | 06/30/2001 |
| (307) 223- | Landline | Laramie | Level 3 Communications | 06/30/2001 |
| (307) 224- | Landline | Casper | Level 3 Communications | 06/30/2001 |
| (307) 228- | Bandwidth.com | 05/23/2014 | ||
| (307) 230- | Wireless | Casper | Versatel Comms | 11/20/1998 |
| (307) 231- | Wireless | Pinedale | Verizon Wireless | 10/13/1999 |
| (307) 232- | Landline | Casper | Qwest Corporation | 10/31/2000 |
| (307) 233- | Landline | Casper | Qwest Corporation | 07/22/1999 |
| (307) 234- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 235- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 237- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 240- | Wireless | Riverton | Verizon Wireless | 06/30/2001 |
| (307) 241- | Wireless | Wheatland | Cingular Wireless | 08/20/2000 |
| (307) 242- | Landline | Yellowstone National Park | Qwest Corporation | 02/04/1994 |
| (307) 245- | Landline | Pine Bluffs | Rt Comms | 02/04/1994 |
| (307) 246- | Landline | Albin | Rt Comms | 02/04/1994 |
| (307) 247- | Wireless | Casper | Cingular Wireless | 06/30/2001 |
| (307) 248- | Wireless | Afton | Verizon Wireless | 03/25/2003 |
| (307) 250- | Wireless | Cody | Verizon Wireless | 07/06/1997 |
| (307) 251- | Wireless | Casper | Verizon Wireless | 04/13/2006 |
| (307) 252- | Wireless | Rock Springs | Uintah Basin Electronic Telecom | 06/30/2001 |
| (307) 253- | Landline | Casper | Qwest Corporation | 03/10/2008 |
| (307) 254- | Wireless | Powell | Verizon Wireless | 09/11/2003 |
| (307) 255- | Wireless | Evanston | Uintah Basin Electronic Telecom | 07/15/2002 |
| (307) 256- | Wireless | Cheyenne | Sprint | 01/05/2004 |
| (307) 257- | Landline | Gillette | Level 3 Communications | 05/19/2004 |
| (307) 258- | Wireless | Casper | Verizon Wireless | 10/11/1997 |
| (307) 259- | Wireless | Casper | Verizon Wireless | 07/04/1995 |
| (307) 260- | Wireless | Big Piney | Union TelephoneCo. | 02/04/1994 |
| (307) 261- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 262- | Wireless | Casper | Verizon Wireless | 02/04/1994 |
| (307) 264- | Wireless | Jackson | Bresnan Broadband | 02/16/2006 |
| (307) 265- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 266- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 267- | Wireless | Casper | Cingular Wireless | 02/04/1994 |
| (307) 268- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 269- | Landline | Wheatland | Level 3 Communications | 03/27/2005 |
| (307) 270- | Wireless | Cokeville | Union TelephoneCo. | 02/04/1994 |
| (307) 271- | Landline | Powell | Level 3 Communications | 05/26/2004 |
| (307) 272- | Wireless | Cody | Verizon Wireless | 02/04/1994 |
| (307) 273- | Landline | Farson | Centurytel DBA Centurylink | 02/04/1994 |
| (307) 274- | Landline | Cheyenne | MCI Metro ATS | 07/14/2004 |
| (307) 275- | Landline | Cheyenne | Verizon Wireless | 01/12/2005 |
| (307) 276- | Landline | Big Piney | Centurytel DBA Centurylink | 02/04/1994 |
| (307) 277- | Wireless | Casper | Verizon Wireless | 08/21/2003 |
| (307) 278- | Landline | Buffalo | Level 3 Communications | 05/19/2004 |
| (307) 279- | Landline | Cokeville | All West Comms | 02/04/1994 |
| (307) 280- | Wireless | Farson | Union TelephoneCo. | 02/04/1994 |
| (307) 281- | Wireless | Sundance | Verizon Wireless | 09/11/1994 |
| (307) 282- | Wireless | Sundance | Verizon Wireless | 10/11/1997 |
| (307) 283- | Landline | Sundance | Range Telephone Cooperative | 02/04/1994 |
| (307) 286- | Wireless | Cheyenne | Verizon Wireless | 01/19/2004 |
| (307) 287- | Wireless | Cheyenne | Verizon Wireless | 05/23/2006 |
| (307) 288- | Landline | Evanston | Level 3 Communications | 05/19/2004 |
| (307) 290- | Wireless | Sundance | Cingular Wireless | 10/15/1996 |
| (307) 292- | Landline | Cody | Mtpcs | 04/20/2006 |
| (307) 296- | Wireless | Cody | Onvoy | 08/17/2012 |
| (307) 297- | Wireless | Green River | Uintah Basin Electronic Telecom | 06/30/2001 |
| (307) 298- | Landline | Douglas | Level 3 Communications | 05/19/2004 |
| (307) 299- | Wireless | Gillette | Cingular Wireless | 10/21/2003 |
| (307) 309- | Wireless | Glenrock | Cingular Wireless | 09/08/2006 |
| (307) 312- | Landline | Beulah | Bandwidth.com | 06/19/2012 |
| (307) 313- | Landline | Evanston | Level 3 Communications | 07/18/2007 |
| (307) 314- | Wireless | Laramie | Bandwidth.com | 09/22/2008 |
| (307) 315- | Landline | Casper | Bresnan Broadband | 05/11/2007 |
| (307) 316- | Landline | Cheyenne | Zayo Group | 03/20/2006 |
| (307) 320- | Wireless | Rawlins | Union TelephoneCo. | 02/04/1994 |
| (307) 321- | Wireless | Rawlins | Verizon Wireless | 02/04/1994 |
| (307) 322- | Landline | Wheatland | Qwest Corporation | 02/04/1994 |
| (307) 324- | Landline | Rawlins | Qwest Corporation | 02/04/1994 |
| (307) 325- | Landline | Hanna | Union Telco | 02/04/1994 |
| (307) 326- | Landline | Encampment | Union Telco | 02/04/1994 |
| (307) 327- | Landline | Encampment | Union Telco | 02/04/1994 |
| (307) 328- | Landline | Rawlins | Qwest Corporation | 02/04/1994 |
| (307) 329- | Wireless | Encampment | Union TelephoneCo. | 02/04/1994 |
| (307) 330- | Wireless | Lander | Union TelephoneCo. | 02/04/1994 |
| (307) 331- | Wireless | Wheatland | Verizon Wireless | 02/04/1994 |
| (307) 332- | Landline | Lander | Qwest Corporation | 02/04/1994 |
| (307) 333- | Landline | Casper | Bresnan Broadband | 10/13/2005 |
| (307) 334- | Landline | Manville | Qwest Corporation | 02/04/1994 |
| (307) 335- | Landline | Lander | Qwest Corporation | 04/01/1997 |
| (307) 337- | Landline | Casper | Bresnan Broadband | 01/07/2011 |
| (307) 338- | Wireless | Torrington | Verizon Wireless | 01/12/2011 |
| (307) 339- | Wireless | Hanna | Union TelephoneCo. | 02/04/1994 |
| (307) 340- | Wireless | Manville | Verizon Wireless | 09/11/1994 |
| (307) 341- | Landline | Parkman | Project Telco | 01/10/1996 |
| (307) 343- | Wireless | Laramie | Verizon Wireless | 07/16/2009 |
| (307) 344- | Landline | Yellowstone National Park | Qwest Corporation | 02/04/1994 |
| (307) 345- | Wireless | Lander | Union TelephoneCo. | 11/20/1998 |
| (307) 347- | Landline | Worland | Rt Comms | 02/04/1994 |
| (307) 348- | Landline | Hanna | Union Telco | 02/04/1994 |
| (307) 349- | Wireless | Lander | Verizon Wireless | 02/27/1999 |
| (307) 350- | Wireless | Rock Springs | Union TelephoneCo. | 02/04/1994 |
| (307) 351- | Wireless | Douglas | Cingular Wireless | 02/11/1995 |
| (307) 352- | Landline | Rock Springs | Qwest Corporation | 02/04/1994 |
| (307) 353- | Landline | Alta | Columbine Telco DBA Silver Star Comms | 01/10/1996 |
| (307) 354- | Wireless | Rock Springs | Union TelephoneCo. | 03/27/2001 |
| (307) 356- | Landline | Medicine Bow | Union Telco | 02/04/1994 |
| (307) 358- | Landline | Douglas | Qwest Corporation | 02/04/1994 |
| (307) 359- | Wireless | Douglas | Verizon Wireless | 02/04/1994 |
| (307) 360- | Wireless | Pinedale | Union TelephoneCo. | 02/11/1995 |
| (307) 362- | Landline | Rock Springs | Qwest Corporation | 02/04/1994 |
| (307) 363- | Landline | Gillette | Bandwidth.com | 08/30/2010 |
| (307) 364- | Bandwidth.com | 05/23/2014 | ||
| (307) 365- | Wireless | Cheyenne | Cingular Wireless | 03/03/2008 |
| (307) 366- | Landline | Ten Sleep | Tri - County Telephone Association | 02/04/1994 |
| (307) 367- | Landline | Pinedale | Centurytel DBA Centurylink | 02/04/1994 |
| (307) 369- | Landline | Cheyenne | Bresnan Broadband | 01/10/2011 |
| (307) 370- | Wireless | Rawlins | Verizon Wireless | 10/11/1997 |
| (307) 371- | Wireless | Rock Springs | Verizon Wireless | 07/06/1997 |
| (307) 373- | Landline | Greybull | Bresnan Broadband | 06/10/2009 |
| (307) 375- | Landline | Worland | Rt Comms | 02/04/1994 |
| (307) 377- | Wireless | Casper | Union TelephoneCo. | 11/20/1998 |
| (307) 378- | Landline | Rock River | Union Telco | 02/04/1994 |
| (307) 379- | Landline | Medicine Bow | Centurytel DBA Centurylink | 02/04/1994 |
| (307) 380- | Wireless | Baggs | Union TelephoneCo. | 02/04/1994 |
| (307) 382- | Landline | Rock Springs | Qwest Corporation | 02/04/1994 |
| (307) 383- | Landline | Baggs | Dubois Telephone Exchange | 02/04/1994 |
| (307) 386- | Landline | La Barge | Union Telco | 02/04/1994 |
| (307) 388- | Wireless | Worland | Cingular Wireless | 02/11/1995 |
| (307) 389- | Wireless | Rock Springs | Verizon Wireless | 02/04/1994 |
| (307) 390- | Wireless | La Barge | Union TelephoneCo. | 02/04/1994 |
| (307) 391- | Wireless | Moorcroft | Cingular Wireless | 03/14/2005 |
| (307) 392- | Landline | Cokeville | Level 3 Communications | 06/21/2006 |
| (307) 399- | Wireless | Laramie | Verizon Wireless | 05/16/2002 |
| (307) 401- | Wireless | Torrington | Cingular Wireless | 08/20/2000 |
| (307) 413- | Wireless | Jackson | Cingular Wireless | 01/29/2001 |
| (307) 417- | Landline | Rawlins | Zayo Group | 08/04/2006 |
| (307) 421- | Wireless | Cheyenne | Verizon Wireless | 08/20/2000 |
| (307) 422- | Landline | Chugwater | Chugwater Telco | 02/04/1994 |
| (307) 425- | Landline | Buffalo | Advanced Comms Technology | 03/30/2011 |
| (307) 426- | Landline | Cheyenne | Bresnan Broadband | 05/22/2007 |
| (307) 429- | Landline | Sheridan | Bandwidth.com | 05/23/2013 |
| (307) 431- | Wireless | Worland | Verizon Wireless | 05/10/1999 |
| (307) 432- | Landline | Cheyenne | Qwest Corporation | 01/25/1998 |
| (307) 433- | Landline | Cheyenne | Qwest Corporation | 10/31/2000 |
| (307) 436- | Landline | Glenrock | Qwest Corporation | 02/04/1994 |
| (307) 437- | Landline | Midwest | Rt Comms | 02/04/1994 |
| (307) 438- | Wireless | Lander | Verizon Wireless | 06/19/2007 |
| (307) 439- | Landline | Casper | Advanced Comms Technology | 06/15/2006 |
| (307) 440- | Landline | Basin | Bresnan Broadband | 06/10/2009 |
| (307) 441- | Landline | Casper | Big River TelephoneCo. | 10/20/2009 |
| (307) 444- | Landline | Evanston | All West | 03/03/2001 |
| (307) 448- | Wireless | Rock Springs | Verizon Wireless | 05/12/2011 |
| (307) 450- | Wireless | Dubois | Union TelephoneCo. | 02/04/1994 |
| (307) 455- | Landline | Dubois | Dubois Telephone Exchange | 02/04/1994 |
| (307) 457- | Landline | Jeffrey City | Rt Comms | 02/04/1994 |
| (307) 459- | Landline | Cheyenne | Level 3 Communications | 06/11/2002 |
| (307) 460- | Landline | Laramie | Level 3 Communications | 06/11/2002 |
| (307) 461- | Landline | Sheridan | Level 3 Communications | 06/11/2002 |
| (307) 462- | Landline | Casper | Level 3 Communications | 06/11/2002 |
| (307) 463- | Landline | Riverton | Level 3 Communications | 06/11/2002 |
| (307) 464- | Landline | Gillette | Qwest Corporation | 02/04/1994 |
| (307) 465- | Landline | Osage | Rt Comms | 02/04/1994 |
| (307) 466- | Landline | Green River | Verizon Wireless | 03/27/2005 |
| (307) 467- | Landline | Alva | Rt Comms | 02/04/1994 |
| (307) 468- | Landline | Upton | Rt Comms | 02/04/1994 |
| (307) 469- | Landline | Hyattville | Tri - County Telephone Association | 02/04/1994 |
| (307) 472- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 473- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 477- | Wireless | Cheyenne | Union TelephoneCo. | 11/20/1998 |
| (307) 480- | Wireless | Thermopolis | Cingular Wireless | 06/15/2005 |
| (307) 481- | Landline | Van Tassell | Zayo Group | 03/14/2007 |
| (307) 486- | Landline | Crowheart | Dubois Telephone Exchange | 02/04/1994 |
| (307) 497- | Landline | Evanston | All West | 05/10/1999 |
| (307) 509- | Landline | Cheyenne | Bandwidth.com | 09/05/2008 |
| (307) 514- | Landline | Cheyenne | Bresnan Broadband | 06/25/2005 |
| (307) 520- | Wireless | Medicine Bow | Union TelephoneCo. | 02/04/1994 |
| (307) 527- | Landline | Cody | Qwest Corporation | 02/04/1994 |
| (307) 529- | Landline | Cheyenne | Ymax Comms Corp. | 08/25/2009 |
| (307) 532- | Landline | Torrington | UnitedTelcoWest - Wy DBA Centurylink West | 02/04/1994 |
| (307) 533- | Landline | Sheridan | Mtpcs | 03/30/2006 |
| (307) 534- | Landline | Torrington | UnitedTelcoWest - Wy DBA Centurylink West | 04/15/1996 |
| (307) 537- | Landline | Pinedale | Centurytel DBA Centurylink | 02/04/1994 |
| (307) 540- | Wireless | Jeffrey City | Union TelephoneCo. | 02/11/1995 |
| (307) 541- | Wireless | Moran | Union TelephoneCo. | 02/11/1995 |
| (307) 543- | Landline | Moran | Qwest Corporation | 02/04/1994 |
| (307) 544- | Landline | Jeffrey City | Rt Comms | 02/04/1994 |
| (307) 545- | Landline | Yellowstone National Park | Qwest Corporation | 02/04/1994 |
| (307) 547- | Landline | Burns | Rt Comms | 02/04/1994 |
| (307) 548- | Landline | Lovell | Tct West | 02/04/1994 |
| (307) 549- | Wireless | Yellowstone National Park | Union TelephoneCo. | 02/11/1995 |
| (307) 554- | Landline | Glenrock | Zayo Group | 03/27/2005 |
| (307) 567- | Wireless | Gillette | Union TelephoneCo. | 11/20/1998 |
| (307) 568- | Landline | Basin | Tct West | 02/04/1994 |
| (307) 575- | Wireless | Torrington | Verizon Wireless | 06/28/2002 |
| (307) 576- | Landline | Alta | Columbine Telco DBA Silver Star Comms | 01/10/1996 |
| (307) 577- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 578- | Landline | Cody | Qwest Corporation | 02/04/1994 |
| (307) 586- | Landline | Cody | Tri Tel | 04/01/2005 |
| (307) 587- | Landline | Cody | Qwest Corporation | 02/04/1994 |
| (307) 600- | Wireless | Cokeville | All West Wireless | 09/02/2005 |
| (307) 620- | Wireless | Buffalo | Verizon Wireless | 01/25/1998 |
| (307) 621- | Wireless | Buffalo | Verizon Wireless | 08/14/1998 |
| (307) 622- | Wireless | Gillette | Cingular Wireless | 11/24/2010 |
| (307) 624- | Wireless | Douglas | Cingular Wireless | 10/03/2001 |
| (307) 629- | Wireless | Newcastle | Cingular Wireless | 12/21/2004 |
| (307) 630- | Wireless | Cheyenne | Verizon Wireless | 02/04/1994 |
| (307) 631- | Wireless | Cheyenne | Verizon Wireless | 07/04/1995 |
| (307) 632- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 633- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 634- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 635- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 637- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 638- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 640- | Wireless | Cheyenne | Cingular Wireless | 02/04/1994 |
| (307) 643- | Landline | Beulah | Qwest Corporation | 01/10/1996 |
| (307) 645- | Landline | Powell | Project Telco | 02/04/1994 |
| (307) 649- | Landline | Carpenter | Rt Comms | 02/04/1994 |
| (307) 650- | Wireless | Cheyenne | Sprint | 07/04/1995 |
| (307) 654- | Landline | Freedom | Silver Star Telco | 02/04/1994 |
| (307) 655- | Landline | Wolf | Qwest Corporation | 02/04/1994 |
| (307) 656- | Wireless | Alpine | Gold Star Comms | 03/22/2007 |
| (307) 660- | Wireless | Gillette | Cingular Wireless | 05/18/1998 |
| (307) 663- | Landline | Lance Creek | Golden West Tel Coop DBA Golden West Telecomm | 01/10/1996 |
| (307) 664- | Landline | Deaver | Tct West | 02/04/1994 |
| (307) 670- | Wireless | Gillette | Verizon Wireless | 07/06/1997 |
| (307) 672- | Landline | Sheridan | Qwest Corporation | 02/04/1994 |
| (307) 673- | Landline | Sheridan | Qwest Corporation | 01/11/1997 |
| (307) 674- | Landline | Sheridan | Qwest Corporation | 02/04/1994 |
| (307) 675- | Landline | Sheridan | Advanced Comms Technology | 01/30/2003 |
| (307) 677- | Wireless | Evanston | Verizon Wireless | 10/11/1997 |
| (307) 679- | Wireless | Evanston | Verizon Wireless | 02/04/1994 |
| (307) 680- | Wireless | Gillette | Cingular Wireless | 02/04/1994 |
| (307) 681- | Landline | Rozet | Advanced Comms Technology | 04/16/2010 |
| (307) 682- | Landline | Gillette | Qwest Corporation | 02/04/1994 |
| (307) 683- | Landline | Sheridan | Qwest Corporation | 02/04/1994 |
| (307) 684- | Landline | Buffalo | Qwest Corporation | 02/04/1994 |
| (307) 685- | Landline | Gillette | Qwest Corporation | 10/15/1996 |
| (307) 686- | Landline | Gillette | Qwest Corporation | 02/04/1994 |
| (307) 687- | Landline | Gillette | Qwest Corporation | 02/04/1994 |
| (307) 688- | Landline | Gillette | Qwest Corporation | 05/24/2004 |
| (307) 689- | Wireless | Gillette | Verizon Wireless | 02/04/1994 |
| (307) 690- | Wireless | Jackson | Verizon Wireless | 02/04/1994 |
| (307) 696- | Wireless | Gillette | Cingular Wireless | 09/22/2008 |
| (307) 699- | Wireless | Jackson | Verizon Wireless | 07/06/1997 |
| (307) 701- | Wireless | Cheyenne | Union TelephoneCo. | 12/27/2002 |
| (307) 702- | Wireless | Casper | Union TelephoneCo. | 12/27/2002 |
| (307) 703- | Wireless | Laramie | Union TelephoneCo. | 12/27/2002 |
| (307) 704- | Wireless | Gillette | Union TelephoneCo. | 12/27/2002 |
| (307) 705- | Wireless | Rock Springs | Union TelephoneCo. | 06/16/2003 |
| (307) 706- | Wireless | Sheridan | Union TelephoneCo. | 12/27/2002 |
| (307) 707- | Wireless | Green River | Union TelephoneCo. | 06/26/2003 |
| (307) 708- | Wireless | Evanston | Union TelephoneCo. | 06/16/2003 |
| (307) 709- | Wireless | Riverton | Union TelephoneCo. | 06/16/2003 |
| (307) 710- | Wireless | Rawlins | Union TelephoneCo. | 06/16/2003 |
| (307) 712- | Wireless | Cody | Union TelephoneCo. | 12/27/2002 |
| (307) 713- | Wireless | Jackson | Union TelephoneCo. | 06/16/2003 |
| (307) 714- | Wireless | Lander | Union TelephoneCo. | 06/16/2003 |
| (307) 715- | Wireless | Torrington | Union TelephoneCo. | 12/27/2002 |
| (307) 716- | Wireless | Powell | Union TelephoneCo. | 12/27/2002 |
| (307) 717- | Wireless | Douglas | Union TelephoneCo. | 12/27/2002 |
| (307) 718- | Wireless | Worland | Union TelephoneCo. | 12/27/2002 |
| (307) 719- | Wireless | Buffalo | Union TelephoneCo. | 12/27/2002 |
| (307) 720- | Wireless | Wheatland | Union TelephoneCo. | 12/27/2002 |
| (307) 721- | Landline | Laramie | Qwest Corporation | 02/04/1994 |
| (307) 722- | Wireless | Thermopolis | Union TelephoneCo. | 12/27/2002 |
| (307) 723- | Wireless | Kemmerer | Union TelephoneCo. | 06/16/2003 |
| (307) 724- | Wireless | Casper | Union TelephoneCo. | 06/16/2003 |
| (307) 727- | Wireless | Kemmerer | Union TelephoneCo. | 02/04/1994 |
| (307) 728- | Wireless | Shoshoni | Union TelephoneCo. | 02/04/1994 |
| (307) 730- | Wireless | Jackson | Union TelephoneCo. | 02/04/1994 |
| (307) 731- | Wireless | Lovell | Union TelephoneCo. | 12/27/2002 |
| (307) 732- | Landline | Jackson | Qwest Corporation | 08/14/1998 |
| (307) 733- | Landline | Jackson | Qwest Corporation | 02/04/1994 |
| (307) 734- | Landline | Jackson | Qwest Corporation | 02/04/1994 |
| (307) 735- | Landline | Glendo | Qwest Corporation | 02/04/1994 |
| (307) 736- | Landline | Arvada | Range Telephone Cooperative | 02/04/1994 |
| (307) 737- | Landline | Sheridan | Range Telephone Cooperative | 02/04/1994 |
| (307) 738- | Landline | Kaycee | Rt Comms | 02/04/1994 |
| (307) 739- | Landline | Jackson | Qwest Corporation | 02/04/1994 |
| (307) 740- | Wireless | Jackson | Union TelephoneCo. | 02/04/1994 |
| (307) 741- | Wireless | Glenrock | Union TelephoneCo. | 12/27/2002 |
| (307) 742- | Landline | Laramie | Qwest Corporation | 02/04/1994 |
| (307) 744- | Wireless | Newcastle | Union TelephoneCo. | 12/27/2002 |
| (307) 745- | Landline | Laramie | Qwest Corporation | 02/04/1994 |
| (307) 746- | Landline | Newcastle | Rt Comms | 02/04/1994 |
| (307) 747- | Wireless | Fort Bridger | Union TelephoneCo. | 06/16/2003 |
| (307) 749- | Wireless | Pinedale | Union TelephoneCo. | 10/20/2003 |
| (307) 750- | Landline | Sheridan | Range Telephone Cooperative | 01/10/1996 |
| (307) 751- | Wireless | Sheridan | Cingular Wireless | 02/04/1994 |
| (307) 752- | Wireless | Sheridan | Verizon Wireless | 02/04/1994 |
| (307) 754- | Landline | Powell | Qwest Corporation | 02/04/1994 |
| (307) 755- | Landline | Laramie | Qwest Corporation | 02/04/1994 |
| (307) 756- | Landline | Moorcroft | Rt Comms | 02/04/1994 |
| (307) 757- | Landline | Cheyenne | AT&T; Local | 07/22/1999 |
| (307) 758- | Landline | Clearmont | Range Telephone Cooperative | 02/04/1994 |
| (307) 759- | Wireless | Van Tassell | Union TelephoneCo. | 10/20/2003 |
| (307) 760- | Wireless | Laramie | Verizon Wireless | 02/04/1994 |
| (307) 761- | Wireless | Laramie | Cingular Wireless | 02/04/1994 |
| (307) 762- | Landline | Burlington | Tri - County Telephone Association | 02/04/1994 |
| (307) 763- | Wireless | Sheridan | Verizon Wireless | 10/11/1997 |
| (307) 764- | Landline | Powell | Tri Tel | 04/01/2005 |
| (307) 765- | Landline | Greybull | Tct West | 02/04/1994 |
| (307) 766- | Landline | Laramie | Qwest Corporation | 02/04/1994 |
| (307) 771- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 772- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 773- | Landline | Cheyenne | Qwest Corporation | 07/06/1997 |
| (307) 774- | Wireless | Jackson | Gold Star Comms | 06/22/2005 |
| (307) 775- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 777- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 778- | Landline | Cheyenne | Qwest Corporation | 02/04/1994 |
| (307) 779- | Wireless | Wheatland | Union TelephoneCo. | 10/20/2003 |
| (307) 780- | Wireless | Fort Bridger | Union TelephoneCo. | 02/04/1994 |
| (307) 782- | Landline | Fort Bridger | Union Telco | 02/04/1994 |
| (307) 783- | Landline | Evanston | Qwest Corporation | 02/04/1994 |
| (307) 786- | Landline | Urie | Union Telco | 02/04/1994 |
| (307) 787- | Landline | Lyman | Union Telco | 02/04/1994 |
| (307) 788- | Landline | Torrington | UnitedTelcoWest - Wy DBA Centurylink West | 01/10/1996 |
| (307) 789- | Landline | Evanston | Qwest Corporation | 02/04/1994 |
| (307) 790- | Wireless | Sundance | Union TelephoneCo. | 12/18/2003 |
| (307) 797- | Wireless | Casper | Cingular Wireless | 10/03/2001 |
| (307) 798- | Wireless | Rock River | Union TelephoneCo. | 11/06/2007 |
| (307) 799- | Wireless | Evanston | Union TelephoneCo. | 02/04/1994 |
| (307) 800- | Landline | Kemmerer | Zayo Group | 11/19/2012 |
| (307) 823- | Landline | Cheyenne | Teleport Comms America | 08/01/2012 |
| (307) 828- | Landline | Kemmerer | Qwest Corporation | 02/04/1994 |
| (307) 834- | Landline | Meriden | UnitedTelcoWest - Wy DBA Centurylink West | 02/04/1994 |
| (307) 836- | Landline | Guernsey | UnitedTelcoWest - Wy DBA Centurylink West | 02/04/1994 |
| (307) 837- | Landline | Torrington | UnitedTelcoWest - Wy DBA Centurylink West | 02/04/1994 |
| (307) 840- | Wireless | Riverton | Verizon Wireless | 07/06/1997 |
| (307) 849- | Landline | Cokeville | Qwest Corporation | 01/10/1996 |
| (307) 850- | Wireless | Riverton | Union TelephoneCo. | 02/04/1994 |
| (307) 851- | Wireless | Riverton | Verizon Wireless | 01/10/1996 |
| (307) 854- | Landline | Riverton | Advanced Comms Technology | 12/10/2007 |
| (307) 855- | Landline | Riverton | Qwest Corporation | 10/15/1996 |
| (307) 856- | Landline | Riverton | Qwest Corporation | 02/04/1994 |
| (307) 857- | Landline | Riverton | Qwest Corporation | 02/04/1994 |
| (307) 858- | Wireless | Riverton | Union TelephoneCo. | 11/20/1998 |
| (307) 859- | Landline | Pinedale | Centurytel DBA Centurylink | 02/04/1994 |
| (307) 864- | Landline | Thermopolis | Rt Comms | 02/04/1994 |
| (307) 867- | Landline | Thermopolis | Tri - County Telephone Association | 02/04/1994 |
| (307) 868- | Landline | Meeteetse | Tct West | 02/04/1994 |
| (307) 870- | Wireless | Green River | Union TelephoneCo. | 02/04/1994 |
| (307) 871- | Wireless | Green River | Verizon Wireless | 02/27/1999 |
| (307) 872- | Landline | Green River | Qwest Corporation | 02/04/1994 |
| (307) 874- | Landline | Lonetree | Union Telco | 02/04/1994 |
| (307) 875- | Landline | Green River | Qwest Corporation | 02/04/1994 |
| (307) 876- | Landline | Shoshoni | Rt Comms | 02/04/1994 |
| (307) 877- | Landline | Kemmerer | Qwest Corporation | 02/04/1994 |
| (307) 878- | Landline | Hulett | Range Telephone Cooperative | 01/10/1996 |
| (307) 880- | Wireless | Freedom | Gold Star Comms | 06/22/2005 |
| (307) 883- | Landline | Freedom | Silver Star Telco | 02/04/1994 |
| (307) 884- | Wireless | Afton | Union TelephoneCo. | 02/04/1994 |
| (307) 885- | Landline | Afton | Silver Star Telco | 11/20/1998 |
| (307) 886- | Landline | Afton | Qwest Corporation | 02/04/1994 |
| (307) 887- | Wireless | Afton | Gold Star Comms | 06/22/2005 |
| (307) 890- | Wireless | Freedom | Union TelephoneCo. | 02/04/1994 |
| (307) 896- | Landline | Aladdin | Qwest Corporation | 01/10/1996 |
| (307) 899- | Wireless | Cody | Cingular Wireless | 02/04/1994 |
| (307) 920- | Wireless | Cheyenne | T-mobile USA | 07/06/1997 |
| (307) 921- | Wireless | Thermopolis | Verizon Wireless | 07/22/1999 |
| (307) 922- | Landline | Rock Springs | AT&T; Local | 07/22/1999 |
| (307) 939- | Landline | Gillette | Qwest Corporation | 02/04/1994 |
| (307) 941- | Wireless | Newcastle | Verizon Wireless | 07/04/1995 |
| (307) 949- | Wireless | Newcastle | Verizon Wireless | 10/11/1997 |
| (307) 977- | Wireless | Laramie | Union TelephoneCo. | 11/20/1998 |
| (307) 995- | Landline | Casper | Qwest Corporation | 02/04/1994 |
| (307) 996- | Landline | Cheyenne | Qwest Corporation | 07/04/1995 |