Counties in Wisconsin by population under 18

Menominee County had the highest population under 18 of 72 counties in 2017, at 32.6%. Iron County had the lowest, at 14.6%. The median was 21.4% and the figure for Wisconsin was 22.3%. Source: the U.S. Census Bureau.

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Highest32.6Menominee County
Lowest14.6Iron County
Median21.472 counties
Wisconsin22.3History

Map of counties, 2017

Adams County: 14.9 %Ashland County: 21.7 %Barron County: 21.4 %Bayfield County: 17.3 %Brown County: 23.9 %Buffalo County: 21.2 %Burnett County: 18 %Calumet County: 25 %Chippewa County: 22.7 %Clark County: 29 %Columbia County: 21.8 %Crawford County: 20.7 %Dane County: 20.7 %Dodge County: 20.4 %Door County: 16.1 %Douglas County: 20 %Dunn County: 20.5 %Eau Claire County: 20.9 %Florence County: 15.7 %Fond du Lac County: 21.6 %Forest County: 20.7 %Grant County: 21 %Green County: 22.6 %Green Lake County: 21.9 %Iowa County: 23.1 %Iron County: 14.6 %Jackson County: 22.7 %Jefferson County: 22.4 %Juneau County: 20.2 %Kenosha County: 23.4 %Kewaunee County: 22.1 %La Crosse County: 20.4 %Lafayette County: 25.3 %Langlade County: 19.9 %Lincoln County: 19.5 %Manitowoc County: 20.9 %Marathon County: 22.9 %Marinette County: 19.3 %Marquette County: 19.7 %Menominee County: 32.6 %Milwaukee County: 23.9 %Monroe County: 25.4 %Oconto County: 20.6 %Oneida County: 17 %Outagamie County: 23.9 %Ozaukee County: 21.7 %Pepin County: 21.6 %Pierce County: 21.2 %Polk County: 21.6 %Portage County: 20.1 %Price County: 17.8 %Racine County: 23.2 %Richland County: 22.8 %Rock County: 23.5 %Rusk County: 20.7 %St. Croix County: 25.6 %Sauk County: 22.5 %Sawyer County: 19.3 %Shawano County: 21.6 %Sheboygan County: 22.3 %Taylor County: 24.5 %Trempealeau County: 24.6 %Vernon County: 26.1 %Vilas County: 16.2 %Walworth County: 21.3 %Washburn County: 18.7 %Washington County: 22.5 %Waukesha County: 22.2 %Waupaca County: 20.3 %Waushara County: 18.8 %Winnebago County: 20.9 %Wood County: 21.2 %
  • Under 19
  • 19 to 21
  • 21 to 22
  • 22 to 24
  • 24 and over
%, 2017. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2017

Menominee County: 32.6 %Menominee County32.6Clark County: 29 %Clark County29Vernon County: 26.1 %Vernon County26.1St. Croix County: 25.6 %St. Croix County25.6Monroe County: 25.4 %Monroe County25.4Lafayette County: 25.3 %Lafayette County25.3Calumet County: 25 %Calumet County25Trempealeau County: 24.6 %Trempealeau County24.6Taylor County: 24.5 %Taylor County24.5Milwaukee County: 23.9 %Milwaukee County23.9Brown County: 23.9 %Brown County23.9Outagamie County: 23.9 %Outagamie County23.9Rock County: 23.5 %Rock County23.5Kenosha County: 23.4 %Kenosha County23.4Racine County: 23.2 %Racine County23.2Iowa County: 23.1 %Iowa County23.1Marathon County: 22.9 %Marathon County22.9Richland County: 22.8 %Richland County22.8Jackson County: 22.7 %Jackson County22.7Chippewa County: 22.7 %Chippewa County22.7Green County: 22.6 %Green County22.6Sauk County: 22.5 %Sauk County22.5Washington County: 22.5 %Washington County22.5Jefferson County: 22.4 %Jefferson County22.4Sheboygan County: 22.3 %Sheboygan County22.3Waukesha County: 22.2 %Waukesha County22.2Kewaunee County: 22.1 %Kewaunee County22.1Green Lake County: 21.9 %Green Lake County21.9Columbia County: 21.8 %Columbia County21.8Ozaukee County: 21.7 %Ozaukee County21.7Ashland County: 21.7 %Ashland County21.7Pepin County: 21.6 %Pepin County21.6Shawano County: 21.6 %Shawano County21.6Fond du Lac County: 21.6 %Fond du Lac County21.6Polk County: 21.6 %Polk County21.6Barron County: 21.4 %Barron County21.4Walworth County: 21.3 %Walworth County21.3Wood County: 21.2 %Wood County21.2Pierce County: 21.2 %Pierce County21.2Buffalo County: 21.2 %Buffalo County21.2Menominee County: 32.6 %Menominee County32.6Clark County: 29 %Clark County29Vernon County: 26.1 %Vernon County26.1St. Croix County: 25.6 %St. Croix County25.6Monroe County: 25.4 %Monroe County25.4Lafayette County: 25.3 %Lafayette County25.3Calumet County: 25 %Calumet County25Trempealeau County: 24.6 %Trempealeau County24.6Taylor County: 24.5 %Taylor County24.5Milwaukee County: 23.9 %Milwaukee County23.9Brown County: 23.9 %Brown County23.9Outagamie County: 23.9 %Outagamie County23.9Rock County: 23.5 %Rock County23.5Kenosha County: 23.4 %Kenosha County23.4Racine County: 23.2 %Racine County23.2Iowa County: 23.1 %Iowa County23.1Marathon County: 22.9 %Marathon County22.9Richland County: 22.8 %Richland County22.8Jackson County: 22.7 %Jackson County22.7Chippewa County: 22.7 %Chippewa County22.7Green County: 22.6 %Green County22.6Sauk County: 22.5 %Sauk County22.5Washington County: 22.5 %Washington County22.5Jefferson County: 22.4 %Jefferson County22.4Sheboygan County: 22.3 %Sheboygan County22.3Waukesha County: 22.2 %Waukesha County22.2Kewaunee County: 22.1 %Kewaunee County22.1Green Lake County: 21.9 %Green Lake County21.9Columbia County: 21.8 %Columbia County21.8Ozaukee County: 21.7 %Ozaukee County21.7Ashland County: 21.7 %Ashland County21.7Pepin County: 21.6 %Pepin County21.6Shawano County: 21.6 %Shawano County21.6Fond du Lac County: 21.6 %Fond du Lac County21.6Polk County: 21.6 %Polk County21.6Barron County: 21.4 %Barron County21.4Walworth County: 21.3 %Walworth County21.3Wood County: 21.2 %Wood County21.2Pierce County: 21.2 %Pierce County21.2Buffalo County: 21.2 %Buffalo County21.2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2017 (%)Change on 2016
1Menominee County32.60 pts
2Clark County290 pts
3Vernon County26.1+0.1 pts
4St. Croix County25.6-0.3 pts
5Monroe County25.4-0.1 pts
6Lafayette County25.3-0.3 pts
7Calumet County25-0.3 pts
8Trempealeau County24.6-0.1 pts
9Taylor County24.5-0 pts
10Milwaukee County23.9-0.1 pts
11Brown County23.9-0.1 pts
12Outagamie County23.9-0.1 pts
13Rock County23.5-0.2 pts
14Kenosha County23.4-0.4 pts
15Racine County23.2-0.2 pts
16Iowa County23.1-0.2 pts
17Marathon County22.9-0.1 pts
18Richland County22.8+0.3 pts
19Jackson County22.7+0.2 pts
20Chippewa County22.7-0.2 pts
21Green County22.6-0.2 pts
22Sauk County22.5-0.1 pts
23Washington County22.5-0.2 pts
24Jefferson County22.4-0.2 pts
25Sheboygan County22.3-0.2 pts
26Waukesha County22.2-0.1 pts
27Kewaunee County22.1-0.1 pts
28Green Lake County21.9+0.1 pts
29Columbia County21.8-0.3 pts
30Ozaukee County21.7-0.2 pts
31Ashland County21.7-0.4 pts
32Pepin County21.6-0.1 pts
32Shawano County21.60 pts
34Fond du Lac County21.6-0.1 pts
35Polk County21.6-0.2 pts
36Barron County21.4-0.1 pts
37Walworth County21.3-0.4 pts
38Wood County21.2-0 pts
39Pierce County21.2-0.2 pts
40Buffalo County21.2-0.1 pts
41Grant County21+0.1 pts
42Winnebago County20.9-0.1 pts
43Manitowoc County20.9-0.1 pts
44Eau Claire County20.9+0.1 pts
45Dane County20.7-0.2 pts
46Rusk County20.7+0.1 pts
47Forest County20.7-0.2 pts
48Crawford County20.7-0.3 pts
49Oconto County20.6-0.1 pts
50Dunn County20.5-0 pts
51Dodge County20.4-0.1 pts
52La Crosse County20.4-0.1 pts
53Waupaca County20.3-0.3 pts
54Juneau County20.2+0.3 pts
55Portage County20.1+0.1 pts
56Douglas County20-0 pts
57Langlade County19.9+0.1 pts
58Marquette County19.7-0.4 pts
59Lincoln County19.5-0.2 pts
60Marinette County19.3-0 pts
61Sawyer County19.3-0.2 pts
62Waushara County18.8-0.1 pts
63Washburn County18.7-0.1 pts
64Burnett County18-0.3 pts
65Price County17.8+0.2 pts
66Bayfield County17.3-0.1 pts
67Oneida County17-0.2 pts
68Vilas County16.2+0.3 pts
69Door County16.1-0.1 pts
70Florence County15.7+0.2 pts
71Adams County14.9-0.3 pts
72Iron County14.6-0 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, 2017) [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, 2017. 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=2017. 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, 2017. 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=2017.

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, 2017 [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=2017 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_wisconsin_by_2017,
  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, 2017}},
  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=2017. 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, 2017
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=2017
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/wisconsin-counties?period=2017.
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 2017, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Iron County, with 14.6% in 2017.

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