10 Most Populated ZIP Codes in Wyoming

The top ZIP code for population in Wyoming is 82001 (Cheyenne, Laramie County), with a population of 37,955. Across the top 10 most populated ZIP codes in Wyoming, population ranges from 37,955 to 18,946, covering communities from Cheyenne to Casper.

Rank	ZIP	City	County	Population	Population
1	82001	Cheyenne	Laramie County	37,955	37,955
2	82009	Cheyenne	Laramie County	35,355	35,355
3	82604	Casper	Natrona County	27,584	27,584
4	82901	Rock Springs	Sweetwater County	27,471	27,471
5	82601	Casper	Natrona County	26,945	26,945
6	82718	Gillette	Campbell County	26,197	26,197
7	82801	Sheridan	Sheridan County	25,727	25,727
8	82007	Cheyenne	Laramie County	21,800	21,800
9	82070	Laramie	Albany County	20,149	20,149
10	82501	Riverton	Fremont County	18,946	18,946

Methodology

Rankings are derived from the U.S. Census Bureau American Community Survey 5-Year Estimates, vintage 2019 to 2023, joined to USPS ZIP Code Tabulation Areas. We rank by population and surface the top 10 ZIP codes within Wyoming. Values reflect ZCTA-level estimates and may differ slightly from city-level figures. Compiled and reviewed by the Zip Code Near Me Data Team.

More ZIP rankings

Wyoming

Cheapest ZIP Codes

Wyoming

Highest Income ZIP Codes

Overview

All ZIP codes in Wyoming

Most Populated ZIP Codes in other states

Reviewed by Zip Code Near Me Data Team. Last verified June 13, 2026.

10 Most Populated ZIP Codes in Wyoming

Ranked list

Methodology

More ZIP rankings

Most Populated ZIP Codes in other states