RANKING · 2025 ESTIMATES · 23 SHOWN OF 23

Largest by population, Wyoming counties

The most populous Wyoming counties as of the 2025 population estimates. This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide. The median across all 23 is 14,013.

WyomingAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 2000

01Laramie County, WYWY102,938+26%

02Natrona County, WYWY80,526+21%

03Campbell County, WYWY48,145+43%

04Sweetwater County, WYWY41,267+10%

05Fremont County, WYWY39,464+10%

06Albany County, WYWY38,558+20%

07Sheridan County, WYWY33,241+25%

08Park County, WYWY31,171+21%

09Teton County, WYWY23,333+28%

10▲1Lincoln County, WYWY21,180+45%

11▼1Uinta County, WYWY20,728+5%

12Carbon County, WYWY14,013−10%

13Converse County, WYWY13,824+15%

14Goshen County, WYWY12,640+1%

15Big Horn County, WYWY12,024+5%

16Sublette County, WYWY8,929+51%

17▲1Johnson County, WYWY8,908+26%

18▼1Platte County, WYWY8,634−2%

19▲1Crook County, WYWY7,852+33%

20▼1Washakie County, WYWY7,597−8%

21Weston County, WYWY6,840+3%

22Hot Springs County, WYWY4,600−6%

23Niobrara County, WYWY2,341−3%

SHOWING 1–23 OF 23

Download CSV (full list, 23 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES