RANKING · 1990 CENSUS · 23 SHOWN OF 23

Most sparsely populated, Wyoming counties · 1990

Wyoming counties with the fewest residents per square mile (1990). This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide. The median across all 23 is 3.

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SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS –

01Niobrara County, WYWY2,3411–

02Sublette County, WYWY8,9291–

03Johnson County, WYWY8,9081–

04Crook County, WYWY7,8522–

05Carbon County, WYWY14,0132–

06Hot Springs County, WYWY4,6002–

07Converse County, WYWY13,8243–

08Weston County, WYWY6,8403–

09Teton County, WYWY23,3333–

10Lincoln County, WYWY21,1803–

11Park County, WYWY31,1713–

12Big Horn County, WYWY12,0243–

13Fremont County, WYWY39,4644–

14Sweetwater County, WYWY41,2674–

15Washakie County, WYWY7,5974–

16Platte County, WYWY8,6344–

17Goshen County, WYWY12,6406–

18Campbell County, WYWY48,1456–

19Albany County, WYWY38,5587–

20Uinta County, WYWY20,7289–

21Sheridan County, WYWY33,2419–

22Natrona County, WYWY80,52611–

23Laramie County, WYWY102,93827–

SHOWING 1–23 OF 23

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