Data / Rankings / Population / Counties in Utah

Counties in Utah by population

Salt Lake County had the highest population of 29 counties in 2020, at 1.19 million. Daggett County had the lowest, at 951. The median was 20,485 and the figure for Utah was 3.28 million. Source: the U.S. Census Bureau.

Highest1,187,009Salt Lake County
Lowest951Daggett County
Median20,48529 counties
Utah3,283,970History

All counties, 2020

CSVChart (SVG)

Salt Lake CountySalt Lake County: 1,187,009 persons1,187,009Utah CountyUtah County: 663,576 persons663,576Davis CountyDavis County: 363,766 persons363,766Weber CountyWeber County: 262,989 persons262,989Washington CountyWashington County: 182,002 persons182,002Cache CountyCache County: 133,636 persons133,636Tooele CountyTooele County: 73,349 persons73,349Box Elder CountyBox Elder County: 57,944 persons57,944Iron CountyIron County: 57,703 persons57,703Summit CountySummit County: 42,478 persons42,478Uintah CountyUintah County: 35,676 persons35,676Wasatch CountyWasatch County: 35,061 persons35,061Sanpete CountySanpete County: 28,528 persons28,528Sevier CountySevier County: 21,554 persons21,554Carbon CountyCarbon County: 20,485 persons20,485Duchesne CountyDuchesne County: 19,617 persons19,617San Juan CountySan Juan County: 14,521 persons14,521Millard CountyMillard County: 13,053 persons13,053Morgan CountyMorgan County: 12,385 persons12,385Juab CountyJuab County: 11,821 persons11,821Emery CountyEmery County: 9,844 persons9,844Grand CountyGrand County: 9,683 persons9,683Kane CountyKane County: 7,697 persons7,697Beaver CountyBeaver County: 7,089 persons7,089Garfield CountyGarfield County: 5,105 persons5,105Wayne CountyWayne County: 2,505 persons2,505Rich CountyRich County: 2,503 persons2,503Piute CountyPiute County: 1,440 persons1,440Daggett CountyDaggett County: 951 persons951
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2020
persons
1Salt Lake County1,187,009
2Utah County663,576
3Davis County363,766
4Weber County262,989
5Washington County182,002
6Cache County133,636
7Tooele County73,349
8Box Elder County57,944
9Iron County57,703
10Summit County42,478
11Uintah County35,676
12Wasatch County35,061
13Sanpete County28,528
14Sevier County21,554
15Carbon County20,485
16Duchesne County19,617
17San Juan County14,521
18Millard County13,053
19Morgan County12,385
20Juab County11,821
21Emery County9,844
22Grand County9,683
23Kane County7,697
24Beaver County7,089
25Garfield County5,105
26Wayne County2,505
27Rich County2,503
28Piute County1,440
29Daggett County951

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 1.19 million in 2020, according to the U.S. Census Bureau.

Which county has the lowest population?

Daggett County, with 951 in 2020.

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