Counties in Wisconsin by population under 18

Menominee County had the highest population under 18 of 72 counties in 2022, at 31.8%. Adams County had the lowest, at 13.5%. The median was 20.5% and the figure for Wisconsin was 21.3%. Source: the U.S. Census Bureau.

Highest31.8Menominee County
Lowest13.5Adams County
Median20.572 counties
Wisconsin21.3History

Top 40 counties, 2022

Menominee County: 31.8 %Menominee County31.8Clark County: 29.3 %Clark County29.3Vernon County: 26.1 %Vernon County26.1Lafayette County: 25.3 %Lafayette County25.3Monroe County: 25 %Monroe County25Trempealeau County: 24.8 %Trempealeau County24.8St. Croix County: 24 %St. Croix County24Taylor County: 23.6 %Taylor County23.6Milwaukee County: 23.4 %Milwaukee County23.4Outagamie County: 23.1 %Outagamie County23.1Brown County: 22.7 %Brown County22.7Pepin County: 22.6 %Pepin County22.6Calumet County: 22.4 %Calumet County22.4Racine County: 22.4 %Racine County22.4Rock County: 22.3 %Rock County22.3Marathon County: 22.2 %Marathon County22.2Richland County: 21.9 %Richland County21.9Jackson County: 21.8 %Jackson County21.8Chippewa County: 21.8 %Chippewa County21.8Sauk County: 21.7 %Sauk County21.7Kenosha County: 21.7 %Kenosha County21.7Iowa County: 21.6 %Iowa County21.6Grant County: 21.5 %Grant County21.5Green County: 21.4 %Green County21.4Waukesha County: 21.3 %Waukesha County21.3Shawano County: 21.2 %Shawano County21.2Sheboygan County: 21.2 %Sheboygan County21.2Kewaunee County: 21 %Kewaunee County21Green Lake County: 21 %Green Lake County21Washington County: 21 %Washington County21Fond du Lac County: 21 %Fond du Lac County21Wood County: 21 %Wood County21Ozaukee County: 20.9 %Ozaukee County20.9Columbia County: 20.9 %Columbia County20.9Barron County: 20.5 %Barron County20.5Pierce County: 20.5 %Pierce County20.5Ashland County: 20.5 %Ashland County20.5Forest County: 20.3 %Forest County20.3Jefferson County: 20.3 %Jefferson County20.3Winnebago County: 20.3 %Winnebago County20.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Menominee County31.8-0.8 pts
2Clark County29.3-0 pts
3Vernon County26.10 pts
4Lafayette County25.3-0 pts
5Monroe County25-0.1 pts
6Trempealeau County24.8+0.1 pts
7St. Croix County24-0.3 pts
8Taylor County23.60 pts
9Milwaukee County23.4-0.3 pts
10Outagamie County23.1-0.1 pts
11Brown County22.7-0.3 pts
12Pepin County22.6-0.3 pts
13Calumet County22.4-0.5 pts
14Racine County22.4-0.1 pts
15Rock County22.3-0.3 pts
16Marathon County22.2-0.1 pts
17Richland County21.9-0.1 pts
18Jackson County21.8-0.1 pts
19Chippewa County21.8-0.2 pts
20Sauk County21.7-0.2 pts
21Kenosha County21.7-0.3 pts
22Iowa County21.6-0 pts
23Grant County21.5-0.1 pts
24Green County21.4-0.3 pts
25Waukesha County21.3-0.2 pts
26Shawano County21.20 pts
27Sheboygan County21.2-0.2 pts
28Kewaunee County21-0.3 pts
29Green Lake County21-0.1 pts
30Washington County21-0.2 pts
31Fond du Lac County21-0.1 pts
32Wood County21-0.1 pts
33Ozaukee County20.9-0.3 pts
34Columbia County20.9-0.1 pts
35Barron County20.5-0.2 pts
36Pierce County20.5-0.4 pts
37Ashland County20.5-0.6 pts
38Forest County20.3-0.9 pts
39Jefferson County20.3-0.5 pts
39Winnebago County20.3-0.3 pts
41Manitowoc County20.2-0.3 pts
42Eau Claire County20.2-0.4 pts
43Rusk County20.1-0.2 pts
44Polk County20.1-0.3 pts
45Buffalo County20.1-0.2 pts
46Oconto County19.9-0.2 pts
47Waupaca County19.9-0 pts
48Dunn County19.8-0.5 pts
49Crawford County19.7-0.3 pts
50Walworth County19.5-0.4 pts
51Dane County19.5-0.4 pts
52La Crosse County19.4-0.3 pts
53Dodge County19.3-0.2 pts
54Juneau County19.2-0.5 pts
55Marquette County19.2-0.3 pts
56Langlade County19.10 pts
57Portage County19.1-0.6 pts
58Douglas County19-0.4 pts
59Marinette County18.7-0.1 pts
60Lincoln County18.5-0.4 pts
61Waushara County17.8-0.4 pts
62Sawyer County17.7-0.3 pts
63Washburn County17.6-0.3 pts
64Price County16.90 pts
65Oneida County16.4-0.2 pts
66Bayfield County16.3-0 pts
67Burnett County16.2-0.2 pts
68Vilas County15.7-0.2 pts
69Door County15.2-0.2 pts
70Iron County14.4+0.1 pts
71Florence County13.8-0.6 pts
72Adams County13.5-0.4 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 Wisconsin 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 Wisconsin 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/wisconsin-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 Wisconsin 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/wisconsin-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 Wisconsin 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/wisconsin-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_wisconsin_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 Wisconsin 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/wisconsin-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 Wisconsin 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/wisconsin-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/wisconsin-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?

Menominee County, with 31.8% in 2022, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Adams County, with 13.5% 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 Wisconsin: more rankings