RANKING · 2020 CENSUS · 17 SHOWN OF 17

Most population lost, Wyoming cities · 2020

Wyoming cities that lost the most residents from the 2010 census to 2020, by raw count of people rather than percentage. This list covers the 17 cities in Wyoming that qualify, ranked against each other statewide.

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WyomingAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Rawlins, WYWY7,745-1,038+23%

02Green River, WYWY11,450-690−24%

03Evanston, WYWY11,705-612−201%

04Torrington, WYWY6,205-382−406%

05Lander, WYWY7,379+59−138%

06Riverton, WYWY10,910+67−38%

07Powell, WYWY6,574+105+30%

08Douglas, WYWY6,469+266+25%

09Ranchettes, WYWY5,949+401−52%

10Rock Springs, WYWY22,936+490−271%

11Cody, WYWY10,377+508−46%

12Laramie, WYWY32,284+591+14%

13Jackson, WYWY10,720+1,183−72%

14Sheridan, WYWY20,015+1,293−32%

15Casper, WYWY58,771+3,722+28%

16Gillette, WYWY34,024+4,316+115%

17Cheyenne, WYWY66,507+5,666+89%

SHOWING 1–17 OF 17

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