Wyoming Area Code

Wyoming's primary area code is 307, covering the entire state. This area code connects residents and businesses across Wyoming, including cities like Cheyenne and Casper. However, it's important to note that area codes can change over time due to population growth and telecommunications developments.

State Wyoming
State Abbreviation: WY
State Nickname: Equality State Equality State
Capital City Cheyenne
Area Codes 307
Timezone Mountain Standard Time (MST)
wyoming map usa-areacodes.word wyoming map usa-areacodes.word

What time zone is Wyoming?

Wyoming falls within the Mountain Time Zone (MT), which is typically UTC-7:00 during Standard Time and UTC-6:00 during Daylight Saving Time, when applicable. It's important to note that not all parts of Wyoming observe Daylight Saving Time, so the timezone offset may remain UTC-7:00 year-round in some areas of the state.

Note that the start and end dates of daylight saving time can change


Wyoming has historically used the area code 307 for the entire state due to its low population density. This area code has remained constant over the years, providing consistent telecommunications services. While this is the status as of my last knowledge update in September 2021, it's essential to stay informed about any potential changes in area codes for the region.

All Area Codes in Wyoming

This table provides a quick overview of all area codes, their locations, and some historical context for each.

Area Code Location History and Details
307 Entire State of Wyoming Historically, the sole area code for Wyoming, serving the entire state.

Largest Cities in Wyoming with area codes

Quick overview of large cities, their area codes, and some historical context for each in Wyoming.

Name Area Code History and Details
Cheyenne 307 The state capital of Wyoming, known for its western heritage and cultural events.
Casper 307 Wyoming's second-largest city, with a strong focus on energy and outdoor activities.
Laramie 307 Home to the University of Wyoming, offering a mix of education and outdoor recreation.
Gillette 307 Known for its coal mining industry and energy production.
Rock Springs 307 A city in southwestern Wyoming, known for its scenic beauty and natural resources.
Sheridan 307 Nestled in the Bighorn Mountains, known for its outdoor recreation and historic sites.
Green River 307 Located in the southwestern part of the state, offering outdoor adventures.
Evanston 307 A city in the southwestern corner of Wyoming, known for its railroad history.
Riverton 307 Situated in central Wyoming, known for its recreational opportunities and Native American heritage.
Jackson 307 A tourist destination in northwest Wyoming, near Grand Teton and Yellowstone National Parks.
Cody 307 Known for the Buffalo Bill Center of the West and proximity to Yellowstone National Park.
Rawlins 307 Located in south-central Wyoming, known for its history and outdoor opportunities.
Lander 307 A city in central Wyoming, known for its outdoor activities and historic sites.
Torrington 307 Located in southeastern Wyoming, known for its agricultural and rural character.
Powell 307 A city in northwestern Wyoming, known for its agricultural and educational institutions.