Wyoming Zip Codes

Wyoming has a total of 196 ZIP codes, reflecting its sparse population and expansive rural and mountainous regions. All ZIP codes in Wyoming begin with the digits 82, which are unique to the state. The range starts at 82001 in Cheyenne, the state capital, and extends to 83414 in Alta, located near the Idaho border.

The 820 to 822 series primarily serves southeastern Wyoming, including Cheyenne, Laramie, and smaller towns along the state’s border with Colorado and Nebraska. The 823 to 826 series covers central Wyoming, including Casper, one of the state’s largest cities, and surrounding areas. The 827 to 831 series serves the northern and western parts of the state, including Gillette, Jackson, and the Yellowstone National Park region.

Wyoming’s ZIP codes are critical for organizing mail delivery across its vast and diverse geography, which includes urban hubs, remote ranchlands, and scenic wilderness. These codes also help define school districts, voting precincts, and municipal boundaries while supporting key industries such as tourism, agriculture, and energy production.

In the table below, you can see all Wyoming zip codes listed by city, town and village as well as county affiliated. With 176 cities (and towns) and 23 counties (and county-equivalents), Wyoming is the 50th largest state by population (585,501)  and 9th largest one by land area (251,470 km²) in the United States.

The capital of Wyoming is Cheyenne and major cities include Casper, Laramie, Gillette, and Rock Springs.

List of Wyoming Zip Codes by City