RANKING · 2010 CENSUS · 29 SHOWN OF 29

Most population lost, Utah counties · 2010

Utah counties that lost the most residents from the 2000 census to 2010, by raw count of people rather than percentage. This list covers the 29 counties in Utah that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Millard County, UTUT14,057+98−91%

02Emery County, UTUT10,177+116−78%

03Piute County, UTUT1,509+121−23%

04Daggett County, UTUT934+138−40%

05Wayne County, UTUT2,587+269−19%

06Rich County, UTUT2,687+303+28%

07San Juan County, UTUT14,542+333−81%

08Garfield County, UTUT5,256+437−42%

09Beaver County, UTUT7,301+624−50%

10Grand County, UTUT9,790+740−60%

11Carbon County, UTUT20,680+981+406%

12Kane County, UTUT8,597+1,079+23%

13Sevier County, UTUT22,827+1,960−43%

14Juab County, UTUT13,567+2,008−17%

15Morgan County, UTUT13,383+2,340+46%

16Duchesne County, UTUT20,856+4,236+145%

17Sanpete County, UTUT31,453+5,059−22%

18Summit County, UTUT43,141+6,588−54%

19Box Elder County, UTUT65,320+7,230+15%

20Uintah County, UTUT38,278+7,364+144%

21Wasatch County, UTUT38,514+8,315+62%

22Iron County, UTUT67,141+12,384−5%

23Tooele County, UTUT87,461+17,483+24%

24Cache County, UTUT145,000+21,265+0%

25Weber County, UTUT278,174+34,703−9%

26Washington County, UTUT213,670+47,761+14%

27Davis County, UTUT381,227+67,485+32%

28Salt Lake County, UTUT1,220,916+131,268−24%

29Utah County, UTUT759,859+148,028+41%

SHOWING 1–29 OF 29

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