Data / Rankings / Population / Counties in Wyoming

Counties in Wyoming by population, 2025

Laramie County had the highest population of 23 counties in 2025, at 102,938. Niobrara County had the lowest, at 2,341. The median was 14,013 and the figure for Wyoming was 588,753. Source: the U.S. Census Bureau.

Highest102,938Laramie County
Lowest2,341Niobrara County
Median14,01323 counties
Wyoming588,753History

All counties, 2025

CSVChart (SVG)

Laramie CountyLaramie County: 102,938 persons102,938Natrona CountyNatrona County: 80,526 persons80,526Campbell CountyCampbell County: 48,145 persons48,145Sweetwater CountySweetwater County: 41,267 persons41,267Fremont CountyFremont County: 39,464 persons39,464Albany CountyAlbany County: 38,558 persons38,558Sheridan CountySheridan County: 33,241 persons33,241Park CountyPark County: 31,171 persons31,171Teton CountyTeton County: 23,333 persons23,333Lincoln CountyLincoln County: 21,180 persons21,180Uinta CountyUinta County: 20,728 persons20,728Carbon CountyCarbon County: 14,013 persons14,013Converse CountyConverse County: 13,824 persons13,824Goshen CountyGoshen County: 12,640 persons12,640Big Horn CountyBig Horn County: 12,024 persons12,024Sublette CountySublette County: 8,929 persons8,929Johnson CountyJohnson County: 8,908 persons8,908Platte CountyPlatte County: 8,634 persons8,634Crook CountyCrook County: 7,852 persons7,852Washakie CountyWashakie County: 7,597 persons7,597Weston CountyWeston County: 6,840 persons6,840Hot Springs CountyHot Springs County: 4,600 persons4,600Niobrara CountyNiobrara County: 2,341 persons2,341
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2025
persons		Change on 2024
1Laramie County102,938+1.2%
2Natrona County80,526+0.3%
3Campbell County48,145+0.1%
4Sweetwater County41,267-0.2%
5Fremont County39,464-0.5%
6Albany County38,5580%
7Sheridan County33,241+0.9%
8Park County31,171+0.2%
9Teton County23,333-0.1%
10Lincoln County21,180+0.9%
11Uinta County20,728+0.4%
12Carbon County14,013-0.5%
13Converse County13,824+0.2%
14Goshen County12,6400%
15Big Horn County12,024+0.1%
16Sublette County8,929-0.2%
17Johnson County8,908+0.9%
18Platte County8,634+0.8%
19Crook County7,852+0.8%
20Washakie County7,597-0.5%
21Weston County6,840-0.4%
22Hot Springs County4,600-0.1%
23Niobrara County2,341+1.1%

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

Which county has the highest population?

Laramie County, with 102,938 in 2025, according to the U.S. Census Bureau.

Which county has the lowest population?

Niobrara County, with 2,341 in 2025.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved 2026-10-08.

Population: other rankings

Counties in Wyoming: more rankings