RANKING · 2024 ACS · 17 SHOWN OF 17

Most population lost, Wyoming cities

Wyoming cities that lost the most residents from the 2020 census to 2024, by raw count of people rather than percentage. This list covers the 17 cities in Wyoming that qualify, ranked against each other statewide. The median across all 17 is +34. Biggest climber in the top 100 since 2020: Casper, WY, up 11 places to #4.

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WyomingAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

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

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01▲9Rock Springs, WYWY22,936-399+40%

02▲7Ranchettes, WYWY5,949-250−130%

03▼1Green River, WYWY11,450-244−73%

04▲11Casper, WYWY58,771-199−107%

05Lander, WYWY7,379-114−27%

06▼5Rawlins, WYWY7,745-92−89%

07▲6Jackson, WYWY10,720-4−100%

08▲8Gillette, WYWY34,024+28−99%

09▼1Douglas, WYWY6,469+34−84%

10▼7Evanston, WYWY11,705+53−91%

11▼7Torrington, WYWY6,205+63−50%

12▼5Powell, WYWY6,574+84+4%

13▲4Cheyenne, WYWY66,507+107−96%

14▼8Riverton, WYWY10,910+174+61%

15▼4Cody, WYWY10,377+248−74%

16▼2Sheridan, WYWY20,015+548−71%

17▼5Laramie, WYWY32,284+827+60%

SHOWING 1–17 OF 17

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES