Counties in Wisconsin by population under 18

Menominee County had the highest population under 18 of 72 counties in 2016, at 32.6%. Iron County had the lowest, at 14.6%. The median was 21.6% and the figure for Wisconsin was 22.4%. Source: the U.S. Census Bureau.

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Highest32.6Menominee County
Lowest14.6Iron County
Median21.672 counties
Wisconsin22.4History

Map of counties, 2016

Adams County: 15.2 %Ashland County: 22.1 %Barron County: 21.5 %Bayfield County: 17.4 %Brown County: 24 %Buffalo County: 21.3 %Burnett County: 18.3 %Calumet County: 25.3 %Chippewa County: 22.9 %Clark County: 29 %Columbia County: 22.1 %Crawford County: 21 %Dane County: 20.9 %Dodge County: 20.5 %Door County: 16.3 %Douglas County: 20.1 %Dunn County: 20.6 %Eau Claire County: 20.8 %Florence County: 15.6 %Fond du Lac County: 21.8 %Forest County: 20.9 %Grant County: 20.9 %Green County: 22.8 %Green Lake County: 21.8 %Iowa County: 23.3 %Iron County: 14.6 %Jackson County: 22.5 %Jefferson County: 22.6 %Juneau County: 19.9 %Kenosha County: 23.7 %Kewaunee County: 22.3 %La Crosse County: 20.4 %Lafayette County: 25.6 %Langlade County: 19.9 %Lincoln County: 19.7 %Manitowoc County: 21 %Marathon County: 23 %Marinette County: 19.3 %Marquette County: 20.2 %Menominee County: 32.6 %Milwaukee County: 24.1 %Monroe County: 25.4 %Oconto County: 20.7 %Oneida County: 17.2 %Outagamie County: 24 %Ozaukee County: 21.9 %Pepin County: 21.7 %Pierce County: 21.4 %Polk County: 21.8 %Portage County: 19.9 %Price County: 17.6 %Racine County: 23.4 %Richland County: 22.6 %Rock County: 23.8 %Rusk County: 20.6 %St. Croix County: 25.8 %Sauk County: 22.5 %Sawyer County: 19.5 %Shawano County: 21.6 %Sheboygan County: 22.5 %Taylor County: 24.5 %Trempealeau County: 24.6 %Vernon County: 26.1 %Vilas County: 15.9 %Walworth County: 21.6 %Washburn County: 18.8 %Washington County: 22.7 %Waukesha County: 22.3 %Waupaca County: 20.6 %Waushara County: 18.9 %Winnebago County: 21 %Wood County: 21.3 %
  • Under 19
  • 19 to 21
  • 21 to 22
  • 22 to 23
  • 23 to 24
  • 24 and over
%, 2016. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2016

Menominee County: 32.6 %Menominee County32.6Clark County: 29 %Clark County29Vernon County: 26.1 %Vernon County26.1St. Croix County: 25.8 %St. Croix County25.8Lafayette County: 25.6 %Lafayette County25.6Monroe County: 25.4 %Monroe County25.4Calumet County: 25.3 %Calumet County25.3Trempealeau County: 24.6 %Trempealeau County24.6Taylor County: 24.5 %Taylor County24.5Milwaukee County: 24.1 %Milwaukee County24.1Brown County: 24 %Brown County24Outagamie County: 24 %Outagamie County24Rock County: 23.8 %Rock County23.8Kenosha County: 23.7 %Kenosha County23.7Racine County: 23.4 %Racine County23.4Iowa County: 23.3 %Iowa County23.3Marathon County: 23 %Marathon County23Chippewa County: 22.9 %Chippewa County22.9Green County: 22.8 %Green County22.8Washington County: 22.7 %Washington County22.7Richland County: 22.6 %Richland County22.6Jefferson County: 22.6 %Jefferson County22.6Jackson County: 22.5 %Jackson County22.5Sauk County: 22.5 %Sauk County22.5Sheboygan County: 22.5 %Sheboygan County22.5Waukesha County: 22.3 %Waukesha County22.3Kewaunee County: 22.3 %Kewaunee County22.3Ashland County: 22.1 %Ashland County22.1Columbia County: 22.1 %Columbia County22.1Ozaukee County: 21.9 %Ozaukee County21.9Fond du Lac County: 21.8 %Fond du Lac County21.8Green Lake County: 21.8 %Green Lake County21.8Polk County: 21.8 %Polk County21.8Pepin County: 21.7 %Pepin County21.7Walworth County: 21.6 %Walworth County21.6Shawano County: 21.6 %Shawano County21.6Barron County: 21.5 %Barron County21.5Pierce County: 21.4 %Pierce County21.4Buffalo County: 21.3 %Buffalo County21.3Wood County: 21.3 %Wood County21.3Menominee County: 32.6 %Menominee County32.6Clark County: 29 %Clark County29Vernon County: 26.1 %Vernon County26.1St. Croix County: 25.8 %St. Croix County25.8Lafayette County: 25.6 %Lafayette County25.6Monroe County: 25.4 %Monroe County25.4Calumet County: 25.3 %Calumet County25.3Trempealeau County: 24.6 %Trempealeau County24.6Taylor County: 24.5 %Taylor County24.5Milwaukee County: 24.1 %Milwaukee County24.1Brown County: 24 %Brown County24Outagamie County: 24 %Outagamie County24Rock County: 23.8 %Rock County23.8Kenosha County: 23.7 %Kenosha County23.7Racine County: 23.4 %Racine County23.4Iowa County: 23.3 %Iowa County23.3Marathon County: 23 %Marathon County23Chippewa County: 22.9 %Chippewa County22.9Green County: 22.8 %Green County22.8Washington County: 22.7 %Washington County22.7Richland County: 22.6 %Richland County22.6Jefferson County: 22.6 %Jefferson County22.6Jackson County: 22.5 %Jackson County22.5Sauk County: 22.5 %Sauk County22.5Sheboygan County: 22.5 %Sheboygan County22.5Waukesha County: 22.3 %Waukesha County22.3Kewaunee County: 22.3 %Kewaunee County22.3Ashland County: 22.1 %Ashland County22.1Columbia County: 22.1 %Columbia County22.1Ozaukee County: 21.9 %Ozaukee County21.9Fond du Lac County: 21.8 %Fond du Lac County21.8Green Lake County: 21.8 %Green Lake County21.8Polk County: 21.8 %Polk County21.8Pepin County: 21.7 %Pepin County21.7Walworth County: 21.6 %Walworth County21.6Shawano County: 21.6 %Shawano County21.6Barron County: 21.5 %Barron County21.5Pierce County: 21.4 %Pierce County21.4Buffalo County: 21.3 %Buffalo County21.3Wood County: 21.3 %Wood County21.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2016 (%)Change on 2015
1Menominee County32.6-0.3 pts
2Clark County29+0.1 pts
3Vernon County26.1-0 pts
4St. Croix County25.8-0.3 pts
5Lafayette County25.60 pts
6Monroe County25.4-0.1 pts
7Calumet County25.3-0.4 pts
8Trempealeau County24.6+0.2 pts
9Taylor County24.5+0.1 pts
10Milwaukee County24.1-0.2 pts
11Brown County24-0.2 pts
12Outagamie County24-0.1 pts
13Rock County23.8-0.1 pts
14Kenosha County23.7-0.4 pts
15Racine County23.4-0.2 pts
16Iowa County23.3-0.1 pts
17Marathon County23-0.2 pts
18Chippewa County22.9-0.1 pts
19Green County22.8-0.1 pts
20Washington County22.7-0.2 pts
21Richland County22.6-0.1 pts
22Jefferson County22.6-0.1 pts
23Jackson County22.5-0.1 pts
24Sauk County22.5-0.1 pts
25Sheboygan County22.5-0.1 pts
26Waukesha County22.3-0.2 pts
27Kewaunee County22.3-0.1 pts
28Ashland County22.1-0.1 pts
29Columbia County22.1-0.3 pts
30Ozaukee County21.9-0.1 pts
31Fond du Lac County21.8-0.2 pts
32Green Lake County21.8-0.5 pts
32Polk County21.8-0.2 pts
34Pepin County21.7-0.2 pts
35Walworth County21.6-0.3 pts
36Shawano County21.6-0.1 pts
37Barron County21.5-0 pts
38Pierce County21.4+0.1 pts
39Buffalo County21.30 pts
40Wood County21.3-0.2 pts
41Manitowoc County21-0.1 pts
42Winnebago County21+0.1 pts
43Crawford County210 pts
44Grant County20.9+0.2 pts
45Dane County20.9-0.2 pts
46Forest County20.9+0.2 pts
47Eau Claire County20.80 pts
48Oconto County20.7-0 pts
49Rusk County20.6-0.2 pts
50Waupaca County20.6-0.3 pts
51Dunn County20.6-0 pts
52Dodge County20.5-0.3 pts
53La Crosse County20.4-0.1 pts
54Marquette County20.2+0.2 pts
55Douglas County20.1-0.2 pts
56Portage County19.9-0.2 pts
57Juneau County19.9-0.1 pts
58Langlade County19.9+0.1 pts
59Lincoln County19.7-0.3 pts
60Sawyer County19.5-0 pts
61Marinette County19.3-0.1 pts
62Waushara County18.9-0.1 pts
63Washburn County18.8-0.3 pts
64Burnett County18.3-0.1 pts
65Price County17.6-0.2 pts
66Bayfield County17.4-0.5 pts
67Oneida County17.20 pts
68Door County16.3-0.2 pts
69Vilas County15.9-0.4 pts
70Florence County15.6-0.1 pts
71Adams County15.2+0.1 pts
72Iron County14.6-0.3 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 Wisconsin 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 Wisconsin 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/wisconsin-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 Wisconsin 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/wisconsin-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 Wisconsin 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/wisconsin-counties?period=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_wisconsin_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 Wisconsin 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/wisconsin-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 Wisconsin 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/wisconsin-counties?period=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/wisconsin-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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Questions

Which county has the highest population under 18?

Menominee County, with 32.6% in 2016, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Iron County, with 14.6% 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 Wisconsin: more rankings