Data / Rankings / Median age / Counties in Utah

Counties in Utah by median age

Piute County had the highest median age of 29 counties in 2021, at 49.4 years. Utah County had the lowest, at 25.1 years. The median was 33.6 years and the figure for Utah was 31.3 years. Source: the U.S. Census Bureau.

Highest49.4Piute County
Lowest25.1Utah County
Median33.629 counties
Utah31.3History

All counties, 2021

CSVChart (SVG)

Piute CountyPiute County: 49.4 years49.4Wayne CountyWayne County: 43.4 years43.4Kane CountyKane County: 42.5 years42.5Garfield CountyGarfield County: 41.7 years41.7Grand CountyGrand County: 41.4 years41.4Summit CountySummit County: 40.6 years40.6Daggett CountyDaggett County: 38.7 years38.7Washington CountyWashington County: 38.2 years38.2Emery CountyEmery County: 37.9 years37.9Carbon CountyCarbon County: 37.5 years37.5Sevier CountySevier County: 36.3 years36.3Wasatch CountyWasatch County: 34.5 years34.5Millard CountyMillard County: 34.4 years34.4Rich CountyRich County: 34 years34Sanpete CountySanpete County: 33.6 years33.6San Juan CountySan Juan County: 33.3 years33.3Salt Lake CountySalt Lake County: 33.2 years33.2Weber CountyWeber County: 33.1 years33.1Box Elder CountyBox Elder County: 32.9 years32.9Duchesne CountyDuchesne County: 32.5 years32.5Beaver CountyBeaver County: 32.4 years32.4Uintah CountyUintah County: 32.2 years32.2Tooele CountyTooele County: 31.9 years31.9Davis CountyDavis County: 31.6 years31.6Morgan CountyMorgan County: 31.5 years31.5Juab CountyJuab County: 30 years30Iron CountyIron County: 29.5 years29.5Cache CountyCache County: 25.5 years25.5Utah CountyUtah County: 25.1 years25.1
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2021
years
1Piute County49.4
2Wayne County43.4
3Kane County42.5
4Garfield County41.7
5Grand County41.4
6Summit County40.6
7Daggett County38.7
8Washington County38.2
9Emery County37.9
10Carbon County37.5
11Sevier County36.3
12Wasatch County34.5
13Millard County34.4
14Rich County34
15Sanpete County33.6
16San Juan County33.3
17Salt Lake County33.2
18Weber County33.1
19Box Elder County32.9
20Duchesne County32.5
21Beaver County32.4
22Uintah County32.2
23Tooele County31.9
24Davis County31.6
25Morgan County31.5
26Juab County30
27Iron County29.5
28Cache County25.5
29Utah County25.1

Other periods

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

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. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b01002.dat. Retrieved 2026-10-08.

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Rank Counties in Utah by median age using official data, and cite the source.
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Questions

Which county has the highest median age?

Piute County, with 49.4 years in 2021, according to the U.S. Census Bureau.

Which county has the lowest median age?

Utah County, with 25.1 years in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in Utah: more rankings