Data / Rankings / Population under 18 / Counties in Wyoming

Counties in Wyoming by population under 18

Uinta County had the highest population under 18 of 23 counties in 2016, at 29.9%. Albany County had the lowest, at 17.3%. The median was 24% and the figure for Wyoming was 24.1%. Source: the U.S. Census Bureau.

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Highest29.9Uinta County
Lowest17.3Albany County
Median2423 counties
Wyoming24.1History

Map of counties, 2016

Albany County: 17.3 %Big Horn County: 26.1 %Campbell County: 28.8 %Carbon County: 24 %Converse County: 25.4 %Crook County: 24.8 %Fremont County: 25.3 %Goshen County: 20.4 %Hot Springs County: 20.7 %Johnson County: 22 %Laramie County: 23.8 %Lincoln County: 27.3 %Natrona County: 24.6 %Niobrara County: 18.9 %Park County: 20.7 %Platte County: 19.9 %Sheridan County: 21.9 %Sublette County: 25.3 %Sweetwater County: 27.5 %Teton County: 19.8 %Uinta County: 29.9 %Washakie County: 25.5 %Weston County: 22.1 %
  • Under 21
  • 21 to 22
  • 22 to 25
  • 25 to 26
  • 26 and over
%, 2016. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2016

Uinta County: 29.9 %Uinta County29.9Campbell County: 28.8 %Campbell County28.8Sweetwater County: 27.5 %Sweetwater County27.5Lincoln County: 27.3 %Lincoln County27.3Big Horn County: 26.1 %Big Horn County26.1Washakie County: 25.5 %Washakie County25.5Converse County: 25.4 %Converse County25.4Fremont County: 25.3 %Fremont County25.3Sublette County: 25.3 %Sublette County25.3Crook County: 24.8 %Crook County24.8Natrona County: 24.6 %Natrona County24.6Carbon County: 24 %Carbon County24Laramie County: 23.8 %Laramie County23.8Weston County: 22.1 %Weston County22.1Johnson County: 22 %Johnson County22Sheridan County: 21.9 %Sheridan County21.9Park County: 20.7 %Park County20.7Hot Springs County: 20.7 %Hot Springs County20.7Goshen County: 20.4 %Goshen County20.4Platte County: 19.9 %Platte County19.9Teton County: 19.8 %Teton County19.8Niobrara County: 18.9 %Niobrara County18.9Albany County: 17.3 %Albany County17.3Uinta County: 29.9 %Uinta County29.9Campbell County: 28.8 %Campbell County28.8Sweetwater County: 27.5 %Sweetwater County27.5Lincoln County: 27.3 %Lincoln County27.3Big Horn County: 26.1 %Big Horn County26.1Washakie County: 25.5 %Washakie County25.5Converse County: 25.4 %Converse County25.4Fremont County: 25.3 %Fremont County25.3Sublette County: 25.3 %Sublette County25.3Crook County: 24.8 %Crook County24.8Natrona County: 24.6 %Natrona County24.6Carbon County: 24 %Carbon County24Laramie County: 23.8 %Laramie County23.8Weston County: 22.1 %Weston County22.1Johnson County: 22 %Johnson County22Sheridan County: 21.9 %Sheridan County21.9Park County: 20.7 %Park County20.7Hot Springs County: 20.7 %Hot Springs County20.7Goshen County: 20.4 %Goshen County20.4Platte County: 19.9 %Platte County19.9Teton County: 19.8 %Teton County19.8Niobrara County: 18.9 %Niobrara County18.9Albany County: 17.3 %Albany County17.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2016 (%)Change on 2015
1Uinta County29.9-0.1 pts
2Campbell County28.8+0.1 pts
3Sweetwater County27.5+0.1 pts
4Lincoln County27.3-0.1 pts
5Big Horn County26.1-0.2 pts
6Washakie County25.5+0.3 pts
7Converse County25.4-0.3 pts
8Fremont County25.3-0.2 pts
9Sublette County25.3+0.1 pts
10Crook County24.8-0.1 pts
11Natrona County24.6+0.1 pts
12Carbon County24+0.3 pts
13Laramie County23.8-0.2 pts
14Weston County22.1+0.3 pts
15Johnson County22-0.2 pts
16Sheridan County21.9-0.2 pts
17Park County20.7+0.1 pts
18Hot Springs County20.7-0 pts
19Goshen County20.40 pts
20Platte County19.9-0.2 pts
21Teton County19.80 pts
22Niobrara County18.9-0.1 pts
23Albany County17.3+0.3 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, 2016) [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, 2016. 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=2016. 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, 2016. 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=2016.

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, 2016 [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=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_wyoming_by_2016,
  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, 2016}},
  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=2016. 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, 2016
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=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/wyoming-counties?period=2016.
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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Rank Counties in Wyoming by population under 18 using official data, and cite the source.
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Questions

Which county has the highest population under 18?

Uinta County, with 29.9% in 2016, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Albany County, with 17.3% in 2016.

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