RANKING · 2000 CENSUS · 23 SHOWN OF 23

Most population lost, Wyoming counties · 2000

Wyoming counties that lost the most residents from the 1990 census to 2000, by raw count of people rather than percentage. This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide. The median across all 23 is +936.

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SAME RANKING BYCities States Metros

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

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS –

01Sweetwater County, WYWY41,267-1,210–

02Carbon County, WYWY14,013-1,020–

03Washakie County, WYWY7,597-99–

04Niobrara County, WYWY2,341-92–

05Hot Springs County, WYWY4,600+73–

06Weston County, WYWY6,840+126–

07Goshen County, WYWY12,640+165–

08Crook County, WYWY7,852+593–

09Platte County, WYWY8,634+662–

10Converse County, WYWY13,824+924–

11Johnson County, WYWY8,908+930–

12Big Horn County, WYWY12,024+936–

13Uinta County, WYWY20,728+1,037–

14Sublette County, WYWY8,929+1,077–

15Albany County, WYWY38,558+1,217–

16Lincoln County, WYWY21,180+1,948–

17Fremont County, WYWY39,464+2,142–

18Park County, WYWY31,171+2,608–

19Sheridan County, WYWY33,241+2,998–

20Campbell County, WYWY48,145+4,328–

21Natrona County, WYWY80,526+5,307–

22Teton County, WYWY23,333+7,079–

23Laramie County, WYWY102,938+8,465–

SHOWING 1–23 OF 23

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