RANKING · 2000 CENSUS · 23 SHOWN OF 23

Fastest shrinking, Wyoming counties · 2000

Wyoming counties with the steepest population decline from the 1990 census to 2000. 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 –

01Carbon County, WYWY14,013-6.1%–

02Niobrara County, WYWY2,341-3.7%–

03Sweetwater County, WYWY41,267-3.1%–

04Washakie County, WYWY7,597-1.2%–

05Goshen County, WYWY12,640+1.3%–

06Hot Springs County, WYWY4,600+1.5%–

07Weston County, WYWY6,840+1.9%–

08Albany County, WYWY38,558+4.0%–

09Uinta County, WYWY20,728+5.5%–

10Fremont County, WYWY39,464+6.4%–

11Platte County, WYWY8,634+8.1%–

12Converse County, WYWY13,824+8.3%–

13Natrona County, WYWY80,526+8.7%–

14Big Horn County, WYWY12,024+8.9%–

15Crook County, WYWY7,852+11.2%–

16Park County, WYWY31,171+11.3%–

17Laramie County, WYWY102,938+11.6%–

18Sheridan County, WYWY33,241+12.7%–

19Campbell County, WYWY48,145+14.7%–

20Johnson County, WYWY8,908+15.1%–

21Lincoln County, WYWY21,180+15.4%–

22Sublette County, WYWY8,929+22.2%–

23Teton County, WYWY23,333+63.4%–

SHOWING 1–23 OF 23

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