RANKING · 2020 CENSUS · 23 SHOWN OF 23

Fastest growing, Wyoming counties · 2020

Wyoming counties ranked by population growth from the 2010 census to 2020. This list covers the 23 counties in Wyoming that qualify, ranked against each other statewide.

Flip the list · Fastest shrinking, US counties →

WyomingAll states All rankings

SAME RANKING BYCities States Metros

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

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Teton County, WYWY23,333+9.6%−85%

02Laramie County, WYWY102,938+9.6%−17%

03Lincoln County, WYWY21,180+8.1%−47%

04Sheridan County, WYWY33,241+6.2%−51%

05Natrona County, WYWY80,526+6.0%−31%

06Park County, WYWY31,171+5.0%−55%

07Albany County, WYWY38,558+2.1%−47%

08Campbell County, WYWY48,145+1.9%−87%

09Crook County, WYWY7,852+1.4%−88%

10Converse County, WYWY13,824-0.6%−107%

11Niobrara County, WYWY2,341-0.7%−81%

12Platte County, WYWY8,634-0.7%−109%

13Big Horn County, WYWY12,024-1.3%−114%

14Johnson County, WYWY8,908-1.4%−109%

15Fremont County, WYWY39,464-2.2%−135%

16Uinta County, WYWY20,728-3.2%−157%

17Sweetwater County, WYWY41,267-3.5%+12%

18Hot Springs County, WYWY4,600-4.0%−361%

19Weston County, WYWY6,840-5.1%−366%

20Goshen County, WYWY12,640-5.7%−525%

21Carbon County, WYWY14,013-8.5%+39%

22Washakie County, WYWY7,597-9.9%+742%

23Sublette County, WYWY8,929-14.8%−167%

SHOWING 1–23 OF 23

Download CSV (full list, 23 rows)

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