Data / Rankings / Population aged 18 to 64 / Counties in Utah

Counties in Utah by population aged 18 to 64, 2025

Salt Lake County had the highest population aged 18 to 64 of 29 counties in 2025, at 63.8%. Daggett County had the lowest, at 48.8%. The median was 56% and the figure for Utah was 60.9%. Source: the U.S. Census Bureau.

Highest63.8Salt Lake County
Lowest48.8Daggett County
Median5629 counties
Utah60.9History

All counties, 2025

Salt Lake County: 63.8 %Salt Lake County63.8Cache County: 61.6 %Cache County61.6Utah County: 61.4 %Utah County61.4Weber County: 61.2 %Weber County61.2Summit County: 60.2 %Summit County60.2Tooele County: 60 %Tooele County60Davis County: 59.5 %Davis County59.5Iron County: 59.4 %Iron County59.4Grand County: 59.2 %Grand County59.2Sanpete County: 58.5 %Sanpete County58.5Wasatch County: 57.6 %Wasatch County57.6Uintah County: 57.3 %Uintah County57.3Box Elder County: 57 %Box Elder County57Morgan County: 56 %Morgan County56San Juan County: 56 %San Juan County56Carbon County: 55.5 %Carbon County55.5Duchesne County: 54.7 %Duchesne County54.7Beaver County: 54.4 %Beaver County54.4Sevier County: 54.2 %Sevier County54.2Juab County: 53.8 %Juab County53.8Washington County: 53.8 %Washington County53.8Emery County: 52.9 %Emery County52.9Millard County: 52.8 %Millard County52.8Garfield County: 52.7 %Garfield County52.7Kane County: 51.8 %Kane County51.8Wayne County: 51.3 %Wayne County51.3Rich County: 50.5 %Rich County50.5Piute County: 49.8 %Piute County49.8Daggett County: 48.8 %Daggett County48.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2025 (%)Change on 2024
1Salt Lake County63.8+0.2 pts
2Cache County61.6-0.1 pts
3Utah County61.4+0.4 pts
4Weber County61.2+0.3 pts
5Summit County60.2-0.4 pts
6Tooele County60+0.5 pts
7Davis County59.5+0.4 pts
8Iron County59.4+0.2 pts
9Grand County59.2-0.3 pts
10Sanpete County58.5+0.4 pts
11Wasatch County57.6+0.4 pts
12Uintah County57.3+0.5 pts
13Box Elder County57+0.4 pts
14Morgan County56+1.2 pts
15San Juan County56+0.4 pts
16Carbon County55.5+0.3 pts
17Duchesne County54.7+0.4 pts
18Beaver County54.4-0.3 pts
19Sevier County54.2+0.4 pts
20Juab County53.8+0.3 pts
21Washington County53.8+0.6 pts
22Emery County52.9-0.2 pts
23Millard County52.8+0.2 pts
24Garfield County52.7-0.1 pts
25Kane County51.8+0.1 pts
26Wayne County51.3-0.9 pts
27Rich County50.5-0.2 pts
28Piute County49.8-0.1 pts
29Daggett County48.8-0.3 pts

Other periods

About this ranking

Residents aged 18 to 64 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

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. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (Counties in Utah by population aged 18 to 64, 2025) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Utah by population aged 18 to 64, 2025. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-18-64/utah-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Counties in Utah by population aged 18 to 64, 2025. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-18-64/utah-counties.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Utah by population aged 18 to 64, 2025 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/utah-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_utah_by_2025,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Utah by population aged 18 to 64, 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population-18-64/utah-counties. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Utah by population aged 18 to 64, 2025
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/population-18-64/utah-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/utah-counties.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest population aged 18 to 64?

Salt Lake County, with 63.8% in 2025, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Daggett County, with 48.8% in 2025.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Retrieved 2026-10-12.

Population aged 18 to 64: other rankings

Counties in Utah: more rankings