Data / Rankings / Population under 18 / Counties in Wyoming

Counties in Wyoming by population under 18

Campbell County had the highest population under 18 of 23 counties in 2022, at 27.2%. Albany County had the lowest, at 16.2%. The median was 22.2% and the figure for Wyoming was 22.8%. Source: the U.S. Census Bureau.

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Highest27.2Campbell County
Lowest16.2Albany County
Median22.223 counties
Wyoming22.8History

Map of counties, 2022

Albany County: 16.2 %Big Horn County: 24.8 %Campbell County: 27.2 %Carbon County: 22.2 %Converse County: 24.5 %Crook County: 24.9 %Fremont County: 24.1 %Goshen County: 20.2 %Hot Springs County: 20.1 %Johnson County: 20.5 %Laramie County: 22.5 %Lincoln County: 25.2 %Natrona County: 23.7 %Niobrara County: 16.5 %Park County: 20.4 %Platte County: 19.9 %Sheridan County: 21.1 %Sublette County: 23 %Sweetwater County: 25.5 %Teton County: 18.5 %Uinta County: 26.9 %Washakie County: 21.5 %Weston County: 19.8 %
  • Under 20
  • 20 to 21
  • 21 to 23
  • 23 to 25
  • 25 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Campbell County: 27.2 %Campbell County27.2Uinta County: 26.9 %Uinta County26.9Sweetwater County: 25.5 %Sweetwater County25.5Lincoln County: 25.2 %Lincoln County25.2Crook County: 24.9 %Crook County24.9Big Horn County: 24.8 %Big Horn County24.8Converse County: 24.5 %Converse County24.5Fremont County: 24.1 %Fremont County24.1Natrona County: 23.7 %Natrona County23.7Sublette County: 23 %Sublette County23Laramie County: 22.5 %Laramie County22.5Carbon County: 22.2 %Carbon County22.2Washakie County: 21.5 %Washakie County21.5Sheridan County: 21.1 %Sheridan County21.1Johnson County: 20.5 %Johnson County20.5Park County: 20.4 %Park County20.4Goshen County: 20.2 %Goshen County20.2Hot Springs County: 20.1 %Hot Springs County20.1Platte County: 19.9 %Platte County19.9Weston County: 19.8 %Weston County19.8Teton County: 18.5 %Teton County18.5Niobrara County: 16.5 %Niobrara County16.5Albany County: 16.2 %Albany County16.2Campbell County: 27.2 %Campbell County27.2Uinta County: 26.9 %Uinta County26.9Sweetwater County: 25.5 %Sweetwater County25.5Lincoln County: 25.2 %Lincoln County25.2Crook County: 24.9 %Crook County24.9Big Horn County: 24.8 %Big Horn County24.8Converse County: 24.5 %Converse County24.5Fremont County: 24.1 %Fremont County24.1Natrona County: 23.7 %Natrona County23.7Sublette County: 23 %Sublette County23Laramie County: 22.5 %Laramie County22.5Carbon County: 22.2 %Carbon County22.2Washakie County: 21.5 %Washakie County21.5Sheridan County: 21.1 %Sheridan County21.1Johnson County: 20.5 %Johnson County20.5Park County: 20.4 %Park County20.4Goshen County: 20.2 %Goshen County20.2Hot Springs County: 20.1 %Hot Springs County20.1Platte County: 19.9 %Platte County19.9Weston County: 19.8 %Weston County19.8Teton County: 18.5 %Teton County18.5Niobrara County: 16.5 %Niobrara County16.5Albany County: 16.2 %Albany County16.2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Campbell County27.2-0.4 pts
2Uinta County26.9-0.7 pts
3Sweetwater County25.5-0.3 pts
4Lincoln County25.2-0.2 pts
5Crook County24.9-0.2 pts
6Big Horn County24.8-0.1 pts
7Converse County24.5-0.1 pts
8Fremont County24.1-0.4 pts
9Natrona County23.7-0.4 pts
10Sublette County23-0.6 pts
11Laramie County22.5-0.4 pts
12Carbon County22.2-0.3 pts
13Washakie County21.5-0.3 pts
14Sheridan County21.1-0.3 pts
15Johnson County20.5-0.5 pts
16Park County20.4-0 pts
17Goshen County20.2+0.1 pts
18Hot Springs County20.1-0.6 pts
19Platte County19.9-0.2 pts
20Weston County19.8-0.6 pts
21Teton County18.5-0.5 pts
22Niobrara County16.5+0.6 pts
23Albany County16.2-0.2 pts

Other periods

About this ranking

Residents aged 0 to 17 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.

Uses the US age of majority. Not comparable with population_0_14_share, which stops at 14.

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 0 to 17 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 0 to 17 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 Wyoming by population under 18, 2022) [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 0 to 17 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 Wyoming by population under 18, 2022. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-under-18/wyoming-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 Wyoming by population under 18, 2022. 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-under-18/wyoming-counties?period=2022.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 Wyoming by population under 18, 2022 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/wyoming-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_wyoming_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 Wyoming by population under 18, 2022}},
  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-under-18/wyoming-counties?period=2022. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 0 to 17 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 Wyoming by population under 18, 2022
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-under-18/wyoming-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/wyoming-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 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 under 18?

Campbell County, with 27.2% in 2022, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Albany County, with 16.2% in 2022.

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 0 to 17 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 under 18: other rankings

Counties in Wyoming: more rankings