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 2019, at 35.2%. Nelson County had the lowest, at 18.3%. The median was 22.7% and the figure for North Dakota was 23.5%. Source: the U.S. Census Bureau.

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Highest35.2Sioux County
Lowest18.3Nelson County
Median22.753 counties
North Dakota23.5History

Map of counties, 2019

Adams County: 19.6 %Barnes County: 19.6 %Benson County: 33.8 %Billings County: 21.5 %Bottineau County: 21.5 %Bowman County: 23.4 %Burke County: 24.6 %Burleigh County: 23.2 %Cass County: 22.6 %Cavalier County: 22.3 %Dickey County: 25.3 %Divide County: 23.7 %Dunn County: 25.9 %Eddy County: 22.1 %Emmons County: 20 %Foster County: 22.7 %Golden Valley County: 26.2 %Grand Forks County: 21 %Grant County: 19.4 %Griggs County: 21.7 %Hettinger County: 22.3 %Kidder County: 21.8 %LaMoure County: 22.4 %Logan County: 23.5 %McHenry County: 23.6 %McIntosh County: 19 %McKenzie County: 29 %McLean County: 22.4 %Mercer County: 23.5 %Morton County: 23.6 %Mountrail County: 28.1 %Nelson County: 18.3 %Oliver County: 24.7 %Pembina County: 21.3 %Pierce County: 22.3 %Ramsey County: 22.8 %Ransom County: 24.1 %Renville County: 22.9 %Richland County: 22.2 %Rolette County: 33.7 %Sargent County: 20.6 %Sheridan County: 19.1 %Sioux County: 35.2 %Slope County: 21.6 %Stark County: 25.6 %Steele County: 21.8 %Stutsman County: 20 %Towner County: 23.6 %Traill County: 23 %Walsh County: 22.9 %Ward County: 24.3 %Wells County: 20.5 %Williams County: 27.1 %
  • Under 21
  • 21 to 22
  • 22 to 23
  • 23 to 24
  • 24 to 25
  • 25 and over
%, 2019. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2019

Sioux County: 35.2 %Sioux County35.2Benson County: 33.8 %Benson County33.8Rolette County: 33.7 %Rolette County33.7McKenzie County: 29 %McKenzie County29Mountrail County: 28.1 %Mountrail County28.1Williams County: 27.1 %Williams County27.1Golden Valley County: 26.2 %Golden Valley County26.2Dunn County: 25.9 %Dunn County25.9Stark County: 25.6 %Stark County25.6Dickey County: 25.3 %Dickey County25.3Oliver County: 24.7 %Oliver County24.7Burke County: 24.6 %Burke County24.6Ward County: 24.3 %Ward County24.3Ransom County: 24.1 %Ransom County24.1Divide County: 23.7 %Divide County23.7Morton County: 23.6 %Morton County23.6McHenry County: 23.6 %McHenry County23.6Towner County: 23.6 %Towner County23.6Logan County: 23.5 %Logan County23.5Mercer County: 23.5 %Mercer County23.5Bowman County: 23.4 %Bowman County23.4Burleigh County: 23.2 %Burleigh County23.2Traill County: 23 %Traill County23Walsh County: 22.9 %Walsh County22.9Renville County: 22.9 %Renville County22.9Ramsey County: 22.8 %Ramsey County22.8Foster County: 22.7 %Foster County22.7Cass County: 22.6 %Cass County22.6McLean County: 22.4 %McLean County22.4LaMoure County: 22.4 %LaMoure County22.4Pierce County: 22.3 %Pierce County22.3Hettinger County: 22.3 %Hettinger County22.3Cavalier County: 22.3 %Cavalier County22.3Richland County: 22.2 %Richland County22.2Eddy County: 22.1 %Eddy County22.1Steele County: 21.8 %Steele County21.8Kidder County: 21.8 %Kidder County21.8Griggs County: 21.7 %Griggs County21.7Slope County: 21.6 %Slope County21.6Billings County: 21.5 %Billings County21.5Bottineau County: 21.5 %Bottineau County21.5Pembina County: 21.3 %Pembina County21.3Grand Forks County: 21 %Grand Forks County21Sargent County: 20.6 %Sargent County20.6Wells County: 20.5 %Wells County20.5Stutsman County: 20 %Stutsman County20Emmons County: 20 %Emmons County20Barnes County: 19.6 %Barnes County19.6Adams County: 19.6 %Adams County19.6Grant County: 19.4 %Grant County19.4Sheridan County: 19.1 %Sheridan County19.1McIntosh County: 19 %McIntosh County19Nelson County: 18.3 %Nelson County18.3Sioux County: 35.2 %Sioux County35.2Benson County: 33.8 %Benson County33.8Rolette County: 33.7 %Rolette County33.7McKenzie County: 29 %McKenzie County29Mountrail County: 28.1 %Mountrail County28.1Williams County: 27.1 %Williams County27.1Golden Valley County: 26.2 %Golden Valley County26.2Dunn County: 25.9 %Dunn County25.9Stark County: 25.6 %Stark County25.6Dickey County: 25.3 %Dickey County25.3Oliver County: 24.7 %Oliver County24.7Burke County: 24.6 %Burke County24.6Ward County: 24.3 %Ward County24.3Ransom County: 24.1 %Ransom County24.1Divide County: 23.7 %Divide County23.7Morton County: 23.6 %Morton County23.6McHenry County: 23.6 %McHenry County23.6Towner County: 23.6 %Towner County23.6Logan County: 23.5 %Logan County23.5Mercer County: 23.5 %Mercer County23.5Bowman County: 23.4 %Bowman County23.4Burleigh County: 23.2 %Burleigh County23.2Traill County: 23 %Traill County23Walsh County: 22.9 %Walsh County22.9Renville County: 22.9 %Renville County22.9Ramsey County: 22.8 %Ramsey County22.8Foster County: 22.7 %Foster County22.7Cass County: 22.6 %Cass County22.6McLean County: 22.4 %McLean County22.4LaMoure County: 22.4 %LaMoure County22.4Pierce County: 22.3 %Pierce County22.3Hettinger County: 22.3 %Hettinger County22.3Cavalier County: 22.3 %Cavalier County22.3Richland County: 22.2 %Richland County22.2Eddy County: 22.1 %Eddy County22.1Steele County: 21.8 %Steele County21.8Kidder County: 21.8 %Kidder County21.8Griggs County: 21.7 %Griggs County21.7Slope County: 21.6 %Slope County21.6Billings County: 21.5 %Billings County21.5Bottineau County: 21.5 %Bottineau County21.5Pembina County: 21.3 %Pembina County21.3Grand Forks County: 21 %Grand Forks County21Sargent County: 20.6 %Sargent County20.6Wells County: 20.5 %Wells County20.5Stutsman County: 20 %Stutsman County20Emmons County: 20 %Emmons County20Barnes County: 19.6 %Barnes County19.6Adams County: 19.6 %Adams County19.6Grant County: 19.4 %Grant County19.4Sheridan County: 19.1 %Sheridan County19.1McIntosh County: 19 %McIntosh County19Nelson County: 18.3 %Nelson County18.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2019 (%)Change on 2018
1Sioux County35.2-0.6 pts
2Benson County33.8-0.1 pts
3Rolette County33.7-0.4 pts
4McKenzie County29+0.2 pts
5Mountrail County28.1+0.5 pts
6Williams County27.1+0.7 pts
7Golden Valley County26.2-0.3 pts
8Dunn County25.9+0.8 pts
9Stark County25.6+0.3 pts
10Dickey County25.3+0.3 pts
11Oliver County24.7+0.1 pts
12Burke County24.6-0.4 pts
13Ward County24.3+0.2 pts
14Ransom County24.1+0.2 pts
15Divide County23.7+1.4 pts
16Morton County23.6+0.2 pts
17McHenry County23.6-0.3 pts
18Towner County23.6+1.1 pts
19Logan County23.5+0.2 pts
20Mercer County23.5+0.1 pts
21Bowman County23.4-0.2 pts
22Burleigh County23.2-0 pts
23Traill County23+0.2 pts
24Walsh County22.9+0.4 pts
25Renville County22.9-0.1 pts
26Ramsey County22.8-0.5 pts
27Foster County22.7+0.5 pts
28Cass County22.6+0.1 pts
29McLean County22.4+0.4 pts
30LaMoure County22.4+0.2 pts
31Pierce County22.3-0.1 pts
32Hettinger County22.3+0.1 pts
33Cavalier County22.30 pts
34Richland County22.2+0.2 pts
35Eddy County22.1-0.3 pts
36Steele County21.8+0.2 pts
37Kidder County21.8+0.3 pts
38Griggs County21.7+1.4 pts
39Slope County21.6+0.5 pts
40Billings County21.5+0.8 pts
41Bottineau County21.5+0.4 pts
42Pembina County21.3-0.2 pts
43Grand Forks County21+0.1 pts
44Sargent County20.6+0.5 pts
45Wells County20.5-0.6 pts
46Stutsman County20+0.1 pts
47Emmons County20-0.1 pts
48Barnes County19.6-0.3 pts
49Adams County19.6+0.5 pts
50Grant County19.4-0.8 pts
51Sheridan County19.1-0.7 pts
52McIntosh County19-0.4 pts
53Nelson County18.3+0.4 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, 2019) [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, 2019. 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=2019. 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, 2019. 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=2019.

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, 2019 [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=2019 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_north_dakota_2019,
  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, 2019}},
  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=2019. 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, 2019
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=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/north-dakota-counties?period=2019.
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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Rank Counties in North Dakota by population under 18 using official data, and cite the source.
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Questions

Which county has the highest population under 18?

Sioux County, with 35.2% in 2019, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Nelson County, with 18.3% in 2019.

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