Data / Rankings / Population under 18 / Counties in Minnesota

Counties in Minnesota by population under 18

Mahnomen County had the highest population under 18 of 87 counties in 2022, at 29.6%. Cook County had the lowest, at 15%. The median was 23.1% and the figure for Minnesota was 22.7%. Source: the U.S. Census Bureau.

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Highest29.6Mahnomen County
Lowest15Cook County
Median23.187 counties
Minnesota22.7History

Map of counties, 2022

Aitkin County: 15.2 %Anoka County: 23.8 %Becker County: 23.4 %Beltrami County: 24.5 %Benton County: 24.7 %Big Stone County: 21.9 %Blue Earth County: 19.8 %Brown County: 21.6 %Carlton County: 21.9 %Carver County: 25.7 %Cass County: 20.3 %Chippewa County: 24.1 %Chisago County: 22.7 %Clay County: 25.1 %Clearwater County: 24.9 %Cook County: 15 %Cottonwood County: 24.8 %Crow Wing County: 20.6 %Dakota County: 23.9 %Dodge County: 25.7 %Douglas County: 21.3 %Faribault County: 21.9 %Fillmore County: 23.7 %Freeborn County: 21.9 %Goodhue County: 22 %Grant County: 23.4 %Hennepin County: 21.1 %Houston County: 21.8 %Hubbard County: 21.9 %Isanti County: 23.5 %Itasca County: 20.8 %Jackson County: 22 %Kanabec County: 22.1 %Kandiyohi County: 24.3 %Kittson County: 21.7 %Koochiching County: 18.4 %Lac qui Parle County: 21.6 %Lake County: 18.7 %Lake of the Woods County: 18.4 %Le Sueur County: 23.4 %Lincoln County: 23.1 %Lyon County: 25.7 %McLeod County: 21.7 %Mahnomen County: 29.6 %Marshall County: 23.1 %Martin County: 21.9 %Meeker County: 23.5 %Mille Lacs County: 23.3 %Morrison County: 23.3 %Mower County: 25.3 %Murray County: 21.7 %Nicollet County: 22.1 %Nobles County: 28.6 %Norman County: 22.7 %Olmsted County: 23.3 %Otter Tail County: 21.3 %Pennington County: 22.2 %Pine County: 20 %Pipestone County: 25.9 %Polk County: 24.7 %Pope County: 22 %Ramsey County: 22.5 %Red Lake County: 24.4 %Redwood County: 24.9 %Renville County: 23.1 %Rice County: 21.4 %Rock County: 24.1 %Roseau County: 23.9 %St. Louis County: 18.5 %Scott County: 25.9 %Sherburne County: 26 %Sibley County: 22.6 %Stearns County: 23.8 %Steele County: 24.1 %Stevens County: 23.3 %Swift County: 22.8 %Todd County: 25 %Traverse County: 22.2 %Wabasha County: 21.6 %Wadena County: 25.1 %Waseca County: 22.3 %Washington County: 24 %Watonwan County: 26.6 %Wilkin County: 23.4 %Winona County: 18.1 %Wright County: 27.5 %Yellow Medicine County: 23 %
  • Under 21
  • 21 to 22
  • 22 to 23
  • 23 to 24
  • 24 to 25
  • 25 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2022

Mahnomen County: 29.6 %Mahnomen County29.6Nobles County: 28.6 %Nobles County28.6Wright County: 27.5 %Wright County27.5Watonwan County: 26.6 %Watonwan County26.6Sherburne County: 26 %Sherburne County26Pipestone County: 25.9 %Pipestone County25.9Scott County: 25.9 %Scott County25.9Dodge County: 25.7 %Dodge County25.7Carver County: 25.7 %Carver County25.7Lyon County: 25.7 %Lyon County25.7Mower County: 25.3 %Mower County25.3Clay County: 25.1 %Clay County25.1Wadena County: 25.1 %Wadena County25.1Todd County: 25 %Todd County25Clearwater County: 24.9 %Clearwater County24.9Redwood County: 24.9 %Redwood County24.9Cottonwood County: 24.8 %Cottonwood County24.8Polk County: 24.7 %Polk County24.7Benton County: 24.7 %Benton County24.7Beltrami County: 24.5 %Beltrami County24.5Red Lake County: 24.4 %Red Lake County24.4Kandiyohi County: 24.3 %Kandiyohi County24.3Rock County: 24.1 %Rock County24.1Chippewa County: 24.1 %Chippewa County24.1Steele County: 24.1 %Steele County24.1Washington County: 24 %Washington County24Dakota County: 23.9 %Dakota County23.9Roseau County: 23.9 %Roseau County23.9Anoka County: 23.8 %Anoka County23.8Stearns County: 23.8 %Stearns County23.8Fillmore County: 23.7 %Fillmore County23.7Meeker County: 23.5 %Meeker County23.5Isanti County: 23.5 %Isanti County23.5Wilkin County: 23.4 %Wilkin County23.4Le Sueur County: 23.4 %Le Sueur County23.4Becker County: 23.4 %Becker County23.4Grant County: 23.4 %Grant County23.4Olmsted County: 23.3 %Olmsted County23.3Mille Lacs County: 23.3 %Mille Lacs County23.3Stevens County: 23.3 %Stevens County23.3Mahnomen County: 29.6 %Mahnomen County29.6Nobles County: 28.6 %Nobles County28.6Wright County: 27.5 %Wright County27.5Watonwan County: 26.6 %Watonwan County26.6Sherburne County: 26 %Sherburne County26Pipestone County: 25.9 %Pipestone County25.9Scott County: 25.9 %Scott County25.9Dodge County: 25.7 %Dodge County25.7Carver County: 25.7 %Carver County25.7Lyon County: 25.7 %Lyon County25.7Mower County: 25.3 %Mower County25.3Clay County: 25.1 %Clay County25.1Wadena County: 25.1 %Wadena County25.1Todd County: 25 %Todd County25Clearwater County: 24.9 %Clearwater County24.9Redwood County: 24.9 %Redwood County24.9Cottonwood County: 24.8 %Cottonwood County24.8Polk County: 24.7 %Polk County24.7Benton County: 24.7 %Benton County24.7Beltrami County: 24.5 %Beltrami County24.5Red Lake County: 24.4 %Red Lake County24.4Kandiyohi County: 24.3 %Kandiyohi County24.3Rock County: 24.1 %Rock County24.1Chippewa County: 24.1 %Chippewa County24.1Steele County: 24.1 %Steele County24.1Washington County: 24 %Washington County24Dakota County: 23.9 %Dakota County23.9Roseau County: 23.9 %Roseau County23.9Anoka County: 23.8 %Anoka County23.8Stearns County: 23.8 %Stearns County23.8Fillmore County: 23.7 %Fillmore County23.7Meeker County: 23.5 %Meeker County23.5Isanti County: 23.5 %Isanti County23.5Wilkin County: 23.4 %Wilkin County23.4Le Sueur County: 23.4 %Le Sueur County23.4Becker County: 23.4 %Becker County23.4Grant County: 23.4 %Grant County23.4Olmsted County: 23.3 %Olmsted County23.3Mille Lacs County: 23.3 %Mille Lacs County23.3Stevens County: 23.3 %Stevens County23.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Mahnomen County29.6+0.6 pts
2Nobles County28.6+0.3 pts
3Wright County27.5-0.2 pts
4Watonwan County26.6+1.3 pts
5Sherburne County26-0.1 pts
6Pipestone County25.9+0.5 pts
7Scott County25.9-0.5 pts
8Dodge County25.7-0.3 pts
9Carver County25.7-0.5 pts
10Lyon County25.7+0.3 pts
11Mower County25.3-0 pts
12Clay County25.1-0.2 pts
13Wadena County25.1+0.1 pts
14Todd County25+0.1 pts
15Clearwater County24.9-0.3 pts
16Redwood County24.9-0.1 pts
17Cottonwood County24.8+0.1 pts
18Polk County24.70 pts
19Benton County24.7-0.3 pts
20Beltrami County24.5-0.3 pts
21Red Lake County24.4-0.4 pts
22Kandiyohi County24.3-0.3 pts
23Rock County24.1-0.4 pts
24Chippewa County24.1+0.3 pts
25Steele County24.1-0.3 pts
26Washington County24-0.2 pts
27Dakota County23.9-0.1 pts
28Roseau County23.9+0.1 pts
29Anoka County23.8-0.1 pts
30Stearns County23.80 pts
31Fillmore County23.7-0.1 pts
32Meeker County23.50 pts
33Isanti County23.5-0 pts
34Wilkin County23.4+0.2 pts
35Le Sueur County23.4-0 pts
36Becker County23.4-0.4 pts
37Grant County23.4+0.1 pts
38Olmsted County23.3-0.3 pts
39Mille Lacs County23.3-0 pts
40Stevens County23.3+0.1 pts
41Morrison County23.3+0.1 pts
42Lincoln County23.1-0.1 pts
43Marshall County23.1-0.3 pts
44Renville County23.1-0 pts
45Yellow Medicine County23+0.1 pts
46Swift County22.8-0.2 pts
47Chisago County22.7-0.2 pts
47Norman County22.7-0 pts
49Sibley County22.6-0.1 pts
50Ramsey County22.5-0.2 pts
51Waseca County22.3-0.3 pts
52Pennington County22.2+0.1 pts
53Traverse County22.2+0.4 pts
54Nicollet County22.1-0.5 pts
55Kanabec County22.1+0.3 pts
56Jackson County22-0.2 pts
56Pope County22-0.1 pts
58Goodhue County22-0.2 pts
59Big Stone County21.90 pts
60Faribault County21.9+0.1 pts
61Carlton County21.9-0.2 pts
62Freeborn County21.9-0.1 pts
63Martin County21.90 pts
64Hubbard County21.9-0.4 pts
65Houston County21.8-0.4 pts
66McLeod County21.7-0.3 pts
67Murray County21.7+0.1 pts
68Kittson County21.7-0.1 pts
69Wabasha County21.6-0.2 pts
70Lac qui Parle County21.6-0 pts
71Brown County21.60 pts
72Rice County21.4-0.4 pts
73Douglas County21.30 pts
74Otter Tail County21.3-0.1 pts
75Hennepin County21.1-0.2 pts
76Itasca County20.8-0.1 pts
77Crow Wing County20.6-0.4 pts
78Cass County20.3-0.3 pts
79Pine County20-0.3 pts
80Blue Earth County19.8-0.4 pts
81Lake County18.7-0.1 pts
82St. Louis County18.5-0.3 pts
83Lake of the Woods County18.4+0.1 pts
84Koochiching County18.4+0.3 pts
85Winona County18.1-0.4 pts
86Aitkin County15.2-0.9 pts
87Cook County15-0.2 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 Minnesota 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 Minnesota 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/minnesota-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 Minnesota 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/minnesota-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 Minnesota 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/minnesota-counties?period=2022 (Accessed: 12 October 2026).

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

Mahnomen County, with 29.6% in 2022, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Cook County, with 15% 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 Minnesota: more rankings