RANKING · 2010 CENSUS · 23 SHOWN OF 23

Fastest shrinking, Wyoming counties · 2010

Wyoming counties with the steepest population decline from the 2000 census to 2010. This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

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

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Platte County, WYWY8,634-1.6%−120%

02Hot Springs County, WYWY4,600-1.4%−194%

03Carbon County, WYWY14,013+1.6%−126%

04Big Horn County, WYWY12,024+1.8%−80%

05Washakie County, WYWY7,597+2.9%−349%

06Niobrara County, WYWY2,341+3.2%−187%

07Goshen County, WYWY12,640+5.7%+325%

08Uinta County, WYWY20,728+7.0%+26%

09Weston County, WYWY6,840+8.5%+339%

10Park County, WYWY31,171+9.4%−17%

11Sheridan County, WYWY33,241+9.6%−24%

12Fremont County, WYWY39,464+12.1%+90%

13Laramie County, WYWY102,938+12.4%+7%

14Albany County, WYWY38,558+13.4%+239%

15Natrona County, WYWY80,526+13.4%+55%

16Converse County, WYWY13,824+14.8%+78%

17Sweetwater County, WYWY41,267+16.5%−628%

18Teton County, WYWY23,333+16.7%−74%

19Crook County, WYWY7,852+20.3%+81%

20Johnson County, WYWY8,908+21.1%+40%

21Lincoln County, WYWY21,180+24.2%+57%

22Campbell County, WYWY48,145+36.9%+150%

23Sublette County, WYWY8,929+73.1%+229%

SHOWING 1–23 OF 23

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS