RANKING · 2010 CENSUS · 23 SHOWN OF 23

Most population gained, Wyoming counties · 2010

Wyoming counties that added the most residents from the 2000 census to 2010, by raw count of people rather than percentage. This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Campbell County, WYWY48,145+12,435+187%

02Laramie County, WYWY102,938+10,131+20%

03Natrona County, WYWY80,526+8,917+68%

04Sweetwater County, WYWY41,267+6,193−612%

05Sublette County, WYWY8,929+4,327+302%

06Fremont County, WYWY39,464+4,319+102%

07Albany County, WYWY38,558+4,285+252%

08Lincoln County, WYWY21,180+3,533+81%

09Teton County, WYWY23,333+3,043−57%

10Sheridan County, WYWY33,241+2,556−15%

11Park County, WYWY31,171+2,419−7%

12Converse County, WYWY13,824+1,781+93%

13Johnson County, WYWY8,908+1,494+61%

14Uinta County, WYWY20,728+1,376+33%

15Crook County, WYWY7,852+1,196+102%

16Goshen County, WYWY12,640+711+331%

17Weston County, WYWY6,840+564+348%

18Carbon County, WYWY14,013+246−124%

19Washakie County, WYWY7,597+244−346%

20Big Horn County, WYWY12,024+207−78%

21Niobrara County, WYWY2,341+77−184%

22Hot Springs County, WYWY4,600-70−196%

23Platte County, WYWY8,634-140−121%

SHOWING 1–23 OF 23

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