RANKING · 1990 CENSUS · 23 SHOWN OF 23

Most sparsely populated, Wyoming counties · 1990

Wyoming counties with the fewest residents per square mile (2023). This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide.

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YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Niobrara County, WYWY2,3411+4%

02Sublette County, WYWY8,9291−18%

03Johnson County, WYWY8,9081−13%

04Crook County, WYWY7,8522−10%

05Carbon County, WYWY14,0132+7%

06Hot Springs County, WYWY4,6002−1%

07Converse County, WYWY13,8243−8%

08Weston County, WYWY6,8403−2%

09Teton County, WYWY23,3333−39%

10Lincoln County, WYWY21,1803−13%

11Park County, WYWY31,1713−10%

12Big Horn County, WYWY12,0243−8%

13Fremont County, WYWY39,4644−6%

14Sweetwater County, WYWY41,2674+3%

15Washakie County, WYWY7,5974+1%

16Platte County, WYWY8,6344−8%

17Goshen County, WYWY12,6406−1%

18Campbell County, WYWY48,1456−13%

19Albany County, WYWY38,5587−4%

20Uinta County, WYWY20,7289−5%

21Sheridan County, WYWY33,2419−11%

22Natrona County, WYWY80,52611−8%

23Laramie County, WYWY102,93827−10%

SHOWING 1–23 OF 23

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES