RANKING · 2010 CENSUS · 23 SHOWN OF 23

Fastest shrinking, Wyoming counties · 2010

Wyoming counties with the steepest population decline since the prior decennial census. 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 densely populated Most sparsely populated Best broadband access Worst broadband access

YEAR2000 2010 2020

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