RANKING · 2025 ESTIMATES · 23 SHOWN OF 23

Most densely populated, Wyoming counties

Wyoming counties ranked by residents per square mile (2025). This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide. The median across all 23 is 4.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population gained Most population lost Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Laramie County, WYWY102,93838+26%

02Natrona County, WYWY80,52615+21%

03Sheridan County, WYWY33,24113+25%

04▲1Campbell County, WYWY48,14510+43%

05▼1Uinta County, WYWY20,72810+5%

06Albany County, WYWY38,5589+20%

07Teton County, WYWY23,3336+28%

08Goshen County, WYWY12,6406+1%

09Lincoln County, WYWY21,1805+45%

10▲1Park County, WYWY31,1714+21%

11▼1Fremont County, WYWY39,4644+10%

12Platte County, WYWY8,6344−2%

13Sweetwater County, WYWY41,2674+10%

14Big Horn County, WYWY12,0244+5%

15Washakie County, WYWY7,5973−8%

16Converse County, WYWY13,8243+15%

17Weston County, WYWY6,8403+3%

18Crook County, WYWY7,8523+33%

19Hot Springs County, WYWY4,6002−6%

20Johnson County, WYWY8,9082+26%

21▲1Sublette County, WYWY8,9292+51%

22▼1Carbon County, WYWY14,0132−10%

23Niobrara County, WYWY2,3411−3%

SHOWING 1–23 OF 23

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