RANKING · 2025 ESTIMATES · 23 SHOWN OF 23

Most sparsely populated, Wyoming counties

Wyoming counties with the fewest 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

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Niobrara County, WYWY2,3411−3%

02▲1Carbon County, WYWY14,0132−10%

03▼1Sublette County, WYWY8,9292+51%

04Johnson County, WYWY8,9082+26%

05Hot Springs County, WYWY4,6002−6%

06Crook County, WYWY7,8523+33%

07Weston County, WYWY6,8403+3%

08Converse County, WYWY13,8243+15%

09Washakie County, WYWY7,5973−8%

10Big Horn County, WYWY12,0244+5%

11Sweetwater County, WYWY41,2674+10%

12Platte County, WYWY8,6344−2%

13▲1Fremont County, WYWY39,4644+10%

14▼1Park County, WYWY31,1714+21%

15Lincoln County, WYWY21,1805+45%

16Goshen County, WYWY12,6406+1%

17Teton County, WYWY23,3336+28%

18Albany County, WYWY38,5589+20%

19▲1Uinta County, WYWY20,72810+5%

20▼1Campbell County, WYWY48,14510+43%

21Sheridan County, WYWY33,24113+25%

22Natrona County, WYWY80,52615+21%

23Laramie County, WYWY102,93838+26%

SHOWING 1–23 OF 23

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