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 2016, at 29.8%. Cook County had the lowest, at 15.7%. The median was 23.2% and the figure for Minnesota was 23.4%. Source: the U.S. Census Bureau.

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Highest29.8Mahnomen County
Lowest15.7Cook County
Median23.287 counties
Minnesota23.4History

Map of counties, 2016

Aitkin County: 17 %Anoka County: 24.5 %Becker County: 24.4 %Beltrami County: 25.1 %Benton County: 25 %Big Stone County: 20.6 %Blue Earth County: 20.2 %Brown County: 21.8 %Carlton County: 22.8 %Carver County: 28 %Cass County: 21.3 %Chippewa County: 22.9 %Chisago County: 23.3 %Clay County: 24.5 %Clearwater County: 24.3 %Cook County: 15.7 %Cottonwood County: 23.4 %Crow Wing County: 22 %Dakota County: 24.9 %Dodge County: 27.2 %Douglas County: 21.5 %Faribault County: 21.9 %Fillmore County: 24.2 %Freeborn County: 22 %Goodhue County: 22.8 %Grant County: 23.1 %Hennepin County: 22 %Houston County: 21.9 %Hubbard County: 21.7 %Isanti County: 24.4 %Itasca County: 21.5 %Jackson County: 22.3 %Kanabec County: 21.6 %Kandiyohi County: 24.4 %Kittson County: 21.1 %Koochiching County: 19.3 %Lac qui Parle County: 20.3 %Lake County: 18.8 %Lake of the Woods County: 17.9 %Le Sueur County: 24.2 %Lincoln County: 23.2 %Lyon County: 25.2 %McLeod County: 23.2 %Mahnomen County: 29.8 %Marshall County: 23.1 %Martin County: 21.7 %Meeker County: 24.2 %Mille Lacs County: 24.2 %Morrison County: 23.8 %Mower County: 24.9 %Murray County: 21.7 %Nicollet County: 22.5 %Nobles County: 26.9 %Norman County: 22.5 %Olmsted County: 24.4 %Otter Tail County: 21.7 %Pennington County: 22.9 %Pine County: 20.7 %Pipestone County: 24.4 %Polk County: 24 %Pope County: 21.2 %Ramsey County: 23.1 %Red Lake County: 24.8 %Redwood County: 24.4 %Renville County: 22.4 %Rice County: 22.3 %Rock County: 25.8 %Roseau County: 24.6 %St. Louis County: 19.4 %Scott County: 28.5 %Sherburne County: 27.1 %Sibley County: 23.7 %Stearns County: 23.4 %Steele County: 25.5 %Stevens County: 21.9 %Swift County: 22.7 %Todd County: 24.6 %Traverse County: 20.9 %Wabasha County: 21.5 %Wadena County: 24 %Waseca County: 23.5 %Washington County: 25.1 %Watonwan County: 24.5 %Wilkin County: 23.2 %Winona County: 18.9 %Wright County: 28.8 %Yellow Medicine County: 23.2 %
  • Under 21
  • 21 to 22
  • 22 to 23
  • 23 to 24
  • 24 to 25
  • 25 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

Mahnomen County: 29.8 %Mahnomen County29.8Wright County: 28.8 %Wright County28.8Scott County: 28.5 %Scott County28.5Carver County: 28 %Carver County28Dodge County: 27.2 %Dodge County27.2Sherburne County: 27.1 %Sherburne County27.1Nobles County: 26.9 %Nobles County26.9Rock County: 25.8 %Rock County25.8Steele County: 25.5 %Steele County25.5Lyon County: 25.2 %Lyon County25.2Beltrami County: 25.1 %Beltrami County25.1Washington County: 25.1 %Washington County25.1Benton County: 25 %Benton County25Mower County: 24.9 %Mower County24.9Dakota County: 24.9 %Dakota County24.9Red Lake County: 24.8 %Red Lake County24.8Roseau County: 24.6 %Roseau County24.6Todd County: 24.6 %Todd County24.6Watonwan County: 24.5 %Watonwan County24.5Anoka County: 24.5 %Anoka County24.5Clay County: 24.5 %Clay County24.5Kandiyohi County: 24.4 %Kandiyohi County24.4Pipestone County: 24.4 %Pipestone County24.4Redwood County: 24.4 %Redwood County24.4Isanti County: 24.4 %Isanti County24.4Olmsted County: 24.4 %Olmsted County24.4Becker County: 24.4 %Becker County24.4Clearwater County: 24.3 %Clearwater County24.3Fillmore County: 24.2 %Fillmore County24.2Mille Lacs County: 24.2 %Mille Lacs County24.2Le Sueur County: 24.2 %Le Sueur County24.2Meeker County: 24.2 %Meeker County24.2Wadena County: 24 %Wadena County24Polk County: 24 %Polk County24Morrison County: 23.8 %Morrison County23.8Sibley County: 23.7 %Sibley County23.7Waseca County: 23.5 %Waseca County23.5Cottonwood County: 23.4 %Cottonwood County23.4Stearns County: 23.4 %Stearns County23.4Chisago County: 23.3 %Chisago County23.3Mahnomen County: 29.8 %Mahnomen County29.8Wright County: 28.8 %Wright County28.8Scott County: 28.5 %Scott County28.5Carver County: 28 %Carver County28Dodge County: 27.2 %Dodge County27.2Sherburne County: 27.1 %Sherburne County27.1Nobles County: 26.9 %Nobles County26.9Rock County: 25.8 %Rock County25.8Steele County: 25.5 %Steele County25.5Lyon County: 25.2 %Lyon County25.2Beltrami County: 25.1 %Beltrami County25.1Washington County: 25.1 %Washington County25.1Benton County: 25 %Benton County25Mower County: 24.9 %Mower County24.9Dakota County: 24.9 %Dakota County24.9Red Lake County: 24.8 %Red Lake County24.8Roseau County: 24.6 %Roseau County24.6Todd County: 24.6 %Todd County24.6Watonwan County: 24.5 %Watonwan County24.5Anoka County: 24.5 %Anoka County24.5Clay County: 24.5 %Clay County24.5Kandiyohi County: 24.4 %Kandiyohi County24.4Pipestone County: 24.4 %Pipestone County24.4Redwood County: 24.4 %Redwood County24.4Isanti County: 24.4 %Isanti County24.4Olmsted County: 24.4 %Olmsted County24.4Becker County: 24.4 %Becker County24.4Clearwater County: 24.3 %Clearwater County24.3Fillmore County: 24.2 %Fillmore County24.2Mille Lacs County: 24.2 %Mille Lacs County24.2Le Sueur County: 24.2 %Le Sueur County24.2Meeker County: 24.2 %Meeker County24.2Wadena County: 24 %Wadena County24Polk County: 24 %Polk County24Morrison County: 23.8 %Morrison County23.8Sibley County: 23.7 %Sibley County23.7Waseca County: 23.5 %Waseca County23.5Cottonwood County: 23.4 %Cottonwood County23.4Stearns County: 23.4 %Stearns County23.4Chisago County: 23.3 %Chisago County23.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2016 (%)Change on 2015
1Mahnomen County29.8+0.1 pts
2Wright County28.8-0.1 pts
3Scott County28.5-0.3 pts
4Carver County28-0 pts
5Dodge County27.2-0.1 pts
6Sherburne County27.1-0.2 pts
7Nobles County26.9+0.3 pts
8Rock County25.80 pts
9Steele County25.5-0.1 pts
10Lyon County25.2+0.3 pts
11Beltrami County25.1+0.1 pts
12Washington County25.1-0.2 pts
13Benton County25+0.2 pts
14Mower County24.9+0.1 pts
15Dakota County24.9-0.1 pts
16Red Lake County24.8-0.2 pts
17Roseau County24.6-0.3 pts
18Todd County24.6+0.2 pts
19Watonwan County24.5+0.2 pts
20Anoka County24.5-0.1 pts
21Clay County24.5+0.4 pts
22Kandiyohi County24.4+0.1 pts
23Pipestone County24.4+0.3 pts
24Redwood County24.4-0.1 pts
25Isanti County24.4-0.3 pts
25Olmsted County24.4-0.1 pts
27Becker County24.4-0.3 pts
28Clearwater County24.3-0.3 pts
29Fillmore County24.2+0.3 pts
30Mille Lacs County24.2+0.2 pts
31Le Sueur County24.2-0.2 pts
32Meeker County24.2-0.2 pts
33Wadena County240 pts
34Polk County24+0.3 pts
35Morrison County23.8+0.2 pts
36Sibley County23.7-0.1 pts
37Waseca County23.5+0.3 pts
38Cottonwood County23.4-0 pts
39Stearns County23.4+0.1 pts
40Chisago County23.3-0.1 pts
41Yellow Medicine County23.2+0.2 pts
42McLeod County23.2-0.2 pts
43Wilkin County23.2-0.3 pts
44Lincoln County23.2+0.2 pts
45Grant County23.1+0.8 pts
46Ramsey County23.1-0 pts
47Marshall County23.1-0.3 pts
48Chippewa County22.9-0.1 pts
49Pennington County22.9-0.2 pts
50Goodhue County22.8-0.1 pts
51Carlton County22.8-0 pts
52Swift County22.7+0.7 pts
53Nicollet County22.5+0.3 pts
54Norman County22.5-0.1 pts
55Renville County22.4-0.1 pts
56Rice County22.3-0.1 pts
57Jackson County22.3-0.1 pts
58Freeborn County22-0 pts
59Crow Wing County22-0.2 pts
60Hennepin County22-0.1 pts
61Stevens County21.9-0.2 pts
62Houston County21.9+0.2 pts
63Faribault County21.9-0.1 pts
64Brown County21.8+0.2 pts
65Otter Tail County21.7+0.2 pts
66Hubbard County21.7+0.1 pts
67Murray County21.7+0.4 pts
68Martin County21.7+0.2 pts
69Kanabec County21.6-0.3 pts
70Wabasha County21.5-0.1 pts
71Douglas County21.5+0.1 pts
72Itasca County21.5-0.1 pts
73Cass County21.30 pts
74Pope County21.2-0.1 pts
75Kittson County21.1-0.4 pts
76Traverse County20.9-0.4 pts
77Pine County20.7-0.4 pts
78Big Stone County20.6+0.2 pts
79Lac qui Parle County20.3-0.4 pts
80Blue Earth County20.2+0.1 pts
81St. Louis County19.40 pts
82Koochiching County19.3-0.4 pts
83Winona County18.90 pts
84Lake County18.8-0.2 pts
85Lake of the Woods County17.9-0.3 pts
86Aitkin County17-0.2 pts
87Cook County15.7+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, 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 Minnesota 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/minnesota-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 Minnesota 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/minnesota-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 Minnesota 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/minnesota-counties?period=2016 (Accessed: 12 October 2026).

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

Mahnomen County, with 29.8% in 2016, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Cook County, with 15.7% 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 Minnesota: more rankings