Data / Rankings / Population / Counties in Utah

Counties in Utah by population

Salt Lake County had the highest population of 29 counties in 2023, at 1.21 million. Daggett County had the lowest, at 985. The median was 20,622 and the figure for Utah was 3.45 million. Source: the U.S. Census Bureau.

Highest1,205,509Salt Lake County
Lowest985Daggett County
Median20,62229 counties
Utah3,449,259History

All counties, 2023

CSVChart (SVG)

Salt Lake CountySalt Lake County: 1,205,509 persons1,205,509Utah CountyUtah County: 726,088 persons726,088Davis CountyDavis County: 374,645 persons374,645Weber CountyWeber County: 272,735 persons272,735Washington CountyWashington County: 202,953 persons202,953Cache CountyCache County: 143,021 persons143,021Tooele CountyTooele County: 82,266 persons82,266Iron CountyIron County: 64,306 persons64,306Box Elder CountyBox Elder County: 62,817 persons62,817Summit CountySummit County: 42,981 persons42,981Uintah CountyUintah County: 37,851 persons37,851Wasatch CountyWasatch County: 37,269 persons37,269Sanpete CountySanpete County: 30,565 persons30,565Sevier CountySevier County: 22,378 persons22,378Carbon CountyCarbon County: 20,622 persons20,622Duchesne CountyDuchesne County: 20,484 persons20,484San Juan CountySan Juan County: 14,324 persons14,324Millard CountyMillard County: 13,661 persons13,661Juab CountyJuab County: 13,028 persons13,028Morgan CountyMorgan County: 12,986 persons12,986Emery CountyEmery County: 10,134 persons10,134Grand CountyGrand County: 9,779 persons9,779Kane CountyKane County: 8,433 persons8,433Beaver CountyBeaver County: 7,271 persons7,271Garfield CountyGarfield County: 5,329 persons5,329Rich CountyRich County: 2,668 persons2,668Wayne CountyWayne County: 2,618 persons2,618Piute CountyPiute County: 1,553 persons1,553Daggett CountyDaggett County: 985 persons985
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2023
persons		Change on 2022
1Salt Lake County1,205,509+0.9%
2Utah County726,088+3%
3Davis County374,645+1.1%
4Weber County272,735+1.1%
5Washington County202,953+2.5%
6Cache County143,021+1.9%
7Tooele County82,266+2.8%
8Iron County64,306+2.8%
9Box Elder County62,817+2.1%
10Summit County42,981-0.3%
11Uintah County37,851+1.9%
12Wasatch County37,269+1.6%
13Sanpete County30,565+2.7%
14Sevier County22,378+1.4%
15Carbon County20,622+0.5%
16Duchesne County20,484+1.6%
17San Juan County14,324-0.4%
18Millard County13,661+2%
19Juab County13,028+3.6%
20Morgan County12,986+1%
21Emery County10,134+0.4%
22Grand County9,779-0.3%
23Kane County8,433+2.8%
24Beaver County7,271-0.9%
25Garfield County5,329+1.2%
26Rich County2,668+1.3%
27Wayne County2,618-0.5%
28Piute County1,553+3.7%
29Daggett County985-2.9%

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

Which county has the highest population?

Salt Lake County, with 1.21 million in 2023, according to the U.S. Census Bureau.

Which county has the lowest population?

Daggett County, with 985 in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved 2026-10-08.

Population: other rankings

Counties in Utah: more rankings