RANKING · 2020 CENSUS · 23 SHOWN OF 23

Most sparsely populated, Wyoming counties · 2020

Wyoming counties with the fewest residents per square mile (2020). 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

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Niobrara County, WYWY2,3411+2%

02Sublette County, WYWY8,9292+47%

03Carbon County, WYWY14,0132−7%

04Johnson County, WYWY8,9082+19%

05Hot Springs County, WYWY4,6002−5%

06Crook County, WYWY7,8523+22%

07Weston County, WYWY6,8403+3%

08Converse County, WYWY13,8243+14%

09Washakie County, WYWY7,5973−7%

10Big Horn County, WYWY12,0244+1%

11Sweetwater County, WYWY41,2674+12%

12Platte County, WYWY8,6344−2%

13Park County, WYWY31,1714+15%

14Fremont County, WYWY39,4644+10%

15Lincoln County, WYWY21,1805+34%

16Goshen County, WYWY12,64060%

17Teton County, WYWY23,3336+28%

18Albany County, WYWY38,5589+16%

19Campbell County, WYWY48,14510+40%

20Uinta County, WYWY20,72810+4%

21Sheridan County, WYWY33,24112+16%

22Natrona County, WYWY80,52615+20%

23Laramie County, WYWY102,93837+23%

SHOWING 1–23 OF 23

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS