Data / Rankings / Population under 18 / Counties in North Dakota

Counties in North Dakota by population under 18

Sioux County had the highest population under 18 of 53 counties in 2024, at 33.9%. Nelson County had the lowest, at 18%. The median was 23% and the figure for North Dakota was 23%. Source: the U.S. Census Bureau.

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Highest33.9Sioux County
Lowest18Nelson County
Median2353 counties
North Dakota23History

Map of counties, 2024

Adams County: 19.2 %Barnes County: 19.1 %Benson County: 33 %Billings County: 21 %Bottineau County: 21.4 %Bowman County: 23.4 %Burke County: 24 %Burleigh County: 22.2 %Cass County: 21.7 %Cavalier County: 22.5 %Dickey County: 25.1 %Divide County: 23.3 %Dunn County: 26 %Eddy County: 25.3 %Emmons County: 20.5 %Foster County: 22.8 %Golden Valley County: 23.5 %Grand Forks County: 20.6 %Grant County: 19.8 %Griggs County: 19.8 %Hettinger County: 22.2 %Kidder County: 23 %LaMoure County: 23.3 %Logan County: 23.4 %McHenry County: 24.1 %McIntosh County: 20.4 %McKenzie County: 30.3 %McLean County: 21.4 %Mercer County: 23.4 %Morton County: 23.5 %Mountrail County: 28.5 %Nelson County: 18 %Oliver County: 23.7 %Pembina County: 21.4 %Pierce County: 21.9 %Ramsey County: 23.8 %Ransom County: 22.7 %Renville County: 23 %Richland County: 21.1 %Rolette County: 32.7 %Sargent County: 20.1 %Sheridan County: 20.7 %Sioux County: 33.9 %Slope County: 18.6 %Stark County: 26 %Steele County: 21.2 %Stutsman County: 19.7 %Towner County: 23.1 %Traill County: 23 %Walsh County: 23.1 %Ward County: 23.8 %Wells County: 20.7 %Williams County: 28.3 %
  • Under 20
  • 20 to 21
  • 21 to 23
  • 23 to 25
  • 25 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

Sioux County: 33.9 %Sioux County33.9Benson County: 33 %Benson County33Rolette County: 32.7 %Rolette County32.7McKenzie County: 30.3 %McKenzie County30.3Mountrail County: 28.5 %Mountrail County28.5Williams County: 28.3 %Williams County28.3Stark County: 26 %Stark County26Dunn County: 26 %Dunn County26Eddy County: 25.3 %Eddy County25.3Dickey County: 25.1 %Dickey County25.1McHenry County: 24.1 %McHenry County24.1Burke County: 24 %Burke County24Ramsey County: 23.8 %Ramsey County23.8Ward County: 23.8 %Ward County23.8Oliver County: 23.7 %Oliver County23.7Golden Valley County: 23.5 %Golden Valley County23.5Morton County: 23.5 %Morton County23.5Bowman County: 23.4 %Bowman County23.4Logan County: 23.4 %Logan County23.4Mercer County: 23.4 %Mercer County23.4Divide County: 23.3 %Divide County23.3LaMoure County: 23.3 %LaMoure County23.3Walsh County: 23.1 %Walsh County23.1Towner County: 23.1 %Towner County23.1Renville County: 23 %Renville County23Traill County: 23 %Traill County23Kidder County: 23 %Kidder County23Foster County: 22.8 %Foster County22.8Ransom County: 22.7 %Ransom County22.7Cavalier County: 22.5 %Cavalier County22.5Burleigh County: 22.2 %Burleigh County22.2Hettinger County: 22.2 %Hettinger County22.2Pierce County: 21.9 %Pierce County21.9Cass County: 21.7 %Cass County21.7Bottineau County: 21.4 %Bottineau County21.4Pembina County: 21.4 %Pembina County21.4McLean County: 21.4 %McLean County21.4Steele County: 21.2 %Steele County21.2Richland County: 21.1 %Richland County21.1Billings County: 21 %Billings County21Sheridan County: 20.7 %Sheridan County20.7Wells County: 20.7 %Wells County20.7Grand Forks County: 20.6 %Grand Forks County20.6Emmons County: 20.5 %Emmons County20.5McIntosh County: 20.4 %McIntosh County20.4Sargent County: 20.1 %Sargent County20.1Griggs County: 19.8 %Griggs County19.8Grant County: 19.8 %Grant County19.8Stutsman County: 19.7 %Stutsman County19.7Adams County: 19.2 %Adams County19.2Barnes County: 19.1 %Barnes County19.1Slope County: 18.6 %Slope County18.6Nelson County: 18 %Nelson County18Sioux County: 33.9 %Sioux County33.9Benson County: 33 %Benson County33Rolette County: 32.7 %Rolette County32.7McKenzie County: 30.3 %McKenzie County30.3Mountrail County: 28.5 %Mountrail County28.5Williams County: 28.3 %Williams County28.3Stark County: 26 %Stark County26Dunn County: 26 %Dunn County26Eddy County: 25.3 %Eddy County25.3Dickey County: 25.1 %Dickey County25.1McHenry County: 24.1 %McHenry County24.1Burke County: 24 %Burke County24Ramsey County: 23.8 %Ramsey County23.8Ward County: 23.8 %Ward County23.8Oliver County: 23.7 %Oliver County23.7Golden Valley County: 23.5 %Golden Valley County23.5Morton County: 23.5 %Morton County23.5Bowman County: 23.4 %Bowman County23.4Logan County: 23.4 %Logan County23.4Mercer County: 23.4 %Mercer County23.4Divide County: 23.3 %Divide County23.3LaMoure County: 23.3 %LaMoure County23.3Walsh County: 23.1 %Walsh County23.1Towner County: 23.1 %Towner County23.1Renville County: 23 %Renville County23Traill County: 23 %Traill County23Kidder County: 23 %Kidder County23Foster County: 22.8 %Foster County22.8Ransom County: 22.7 %Ransom County22.7Cavalier County: 22.5 %Cavalier County22.5Burleigh County: 22.2 %Burleigh County22.2Hettinger County: 22.2 %Hettinger County22.2Pierce County: 21.9 %Pierce County21.9Cass County: 21.7 %Cass County21.7Bottineau County: 21.4 %Bottineau County21.4Pembina County: 21.4 %Pembina County21.4McLean County: 21.4 %McLean County21.4Steele County: 21.2 %Steele County21.2Richland County: 21.1 %Richland County21.1Billings County: 21 %Billings County21Sheridan County: 20.7 %Sheridan County20.7Wells County: 20.7 %Wells County20.7Grand Forks County: 20.6 %Grand Forks County20.6Emmons County: 20.5 %Emmons County20.5McIntosh County: 20.4 %McIntosh County20.4Sargent County: 20.1 %Sargent County20.1Griggs County: 19.8 %Griggs County19.8Grant County: 19.8 %Grant County19.8Stutsman County: 19.7 %Stutsman County19.7Adams County: 19.2 %Adams County19.2Barnes County: 19.1 %Barnes County19.1Slope County: 18.6 %Slope County18.6Nelson County: 18 %Nelson County18
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Sioux County33.9-0.7 pts
2Benson County33-1.1 pts
3Rolette County32.7-0.5 pts
4McKenzie County30.3+0.1 pts
5Mountrail County28.5+0.1 pts
6Williams County28.30 pts
7Stark County26+0.1 pts
8Dunn County26-0.5 pts
9Eddy County25.3+1.1 pts
10Dickey County25.1-0.1 pts
11McHenry County24.1+0.4 pts
12Burke County24+0.1 pts
13Ramsey County23.8+0.2 pts
14Ward County23.8-0.4 pts
15Oliver County23.7-0.1 pts
16Golden Valley County23.5-0.2 pts
17Morton County23.5-0.2 pts
18Bowman County23.4-0.1 pts
19Logan County23.4-0.7 pts
20Mercer County23.40 pts
21Divide County23.3+0.2 pts
22LaMoure County23.3+0.2 pts
23Walsh County23.1+0.2 pts
24Towner County23.1-0.3 pts
25Renville County23+0.7 pts
26Traill County23+0.1 pts
27Kidder County23+0.6 pts
28Foster County22.8-0.1 pts
29Ransom County22.7-0.4 pts
30Cavalier County22.5+0.3 pts
31Burleigh County22.2-0.3 pts
32Hettinger County22.2+0.1 pts
33Pierce County21.9-0.2 pts
34Cass County21.7-0.2 pts
35Bottineau County21.4-0.5 pts
36Pembina County21.4+0.2 pts
37McLean County21.4-0.1 pts
38Steele County21.2-0.5 pts
39Richland County21.1-0.4 pts
40Billings County21-0.5 pts
41Sheridan County20.7-0.3 pts
42Wells County20.7+0.1 pts
43Grand Forks County20.6-0.1 pts
44Emmons County20.5-0.1 pts
45McIntosh County20.4-0.8 pts
46Sargent County20.1-0.1 pts
47Griggs County19.8-0.2 pts
48Grant County19.8-0.2 pts
49Stutsman County19.7-0.3 pts
50Adams County19.2-0.6 pts
51Barnes County19.1-0.4 pts
52Slope County18.6-2.6 pts
53Nelson County180 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 North Dakota by population under 18, 2024) [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 North Dakota by population under 18, 2024. 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/north-dakota-counties?period=2024. 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 North Dakota by population under 18, 2024. 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/north-dakota-counties?period=2024.

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 North Dakota by population under 18, 2024 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/north-dakota-counties?period=2024 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_north_dakota_2024,
  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 North Dakota by population under 18, 2024}},
  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/north-dakota-counties?period=2024. 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 North Dakota by population under 18, 2024
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/north-dakota-counties?period=2024
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/north-dakota-counties?period=2024.
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?

Sioux County, with 33.9% in 2024, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Nelson County, with 18% in 2024.

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 North Dakota: more rankings