RANKING · 2000 CENSUS · 23 SHOWN OF 23

Largest by population, Wyoming counties · 2000

The most populous Wyoming counties as of the 2000 population estimates. This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide.

WyomingAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 1990

01Laramie County, WYWY81,607+12%

02Natrona County, WYWY66,533+9%

03Sweetwater County, WYWY37,613−3%

04Fremont County, WYWY35,804+6%

05Campbell County, WYWY33,698+15%

06Albany County, WYWY32,014+4%

07Sheridan County, WYWY26,560+13%

08Park County, WYWY25,786+11%

09Uinta County, WYWY19,742+6%

10Teton County, WYWY18,251+63%

11Carbon County, WYWY15,639−6%

12Lincoln County, WYWY14,573+15%

13Goshen County, WYWY12,538+1%

14Converse County, WYWY12,052+8%

15Big Horn County, WYWY11,461+9%

16Platte County, WYWY8,807+8%

17Washakie County, WYWY8,289−1%

18Johnson County, WYWY7,075+15%

19Weston County, WYWY6,644+2%

20Sublette County, WYWY5,920+22%

21Crook County, WYWY5,887+11%

22Hot Springs County, WYWY4,882+2%

23Niobrara County, WYWY2,407−4%

SHOWING 1–23 OF 23

Download CSV (full list, 23 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS