RANKING · 2025 ESTIMATES · 23 SHOWN OF 23

Most population gained, Wyoming counties

Wyoming counties that added the most residents from the 2020 census to 2025, 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 +230. Biggest climber in the top 100 since 2020: Sublette County, WY, up 9 places to #13.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Laramie County, WYWY102,938+2,426−71%

02▲2Sheridan County, WYWY33,241+2,320−23%

03▲2Lincoln County, WYWY21,180+1,599−18%

04▲2Park County, WYWY31,171+1,547−41%

05▲3Albany County, WYWY38,558+1,492+23%

06▲1Campbell County, WYWY48,145+1,119−74%

07▲2Crook County, WYWY7,852+671+13%

08▼6Natrona County, WYWY80,526+571−89%

09▲5Big Horn County, WYWY12,024+503−46%

10▲3Johnson County, WYWY8,908+461−50%

11▲6Uinta County, WYWY20,728+278−73%

12▲8Fremont County, WYWY39,464+230−89%

13▲9Sublette County, WYWY8,929+201−81%

14▲4Goshen County, WYWY12,640+142−14%

15▼3Converse County, WYWY13,824+73−92%

16▼5Platte County, WYWY8,634+29−96%

17▼14Teton County, WYWY23,333+2−100%

18▼2Weston County, WYWY6,840+2−98%

19▼4Hot Springs County, WYWY4,600-21−129%

20▼1Washakie County, WYWY7,597-88−11%

21▼11Niobrara County, WYWY2,341-126+37%

22▼1Carbon County, WYWY14,013-524−49%

23Sweetwater County, WYWY41,267-1,005−17%

SHOWING 1–23 OF 23

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES