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 2020, at 35.7%. Nelson County had the lowest, at 17.6%. The median was 22.3% and the figure for North Dakota was 23.5%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest35.7Sioux County
Lowest17.6Nelson County
Median22.353 counties
North Dakota23.5History

Map of counties, 2020

Adams County: 20.3 %Barnes County: 19.5 %Benson County: 35.3 %Billings County: 20.4 %Bottineau County: 21.6 %Bowman County: 23.7 %Burke County: 24.8 %Burleigh County: 23.1 %Cass County: 22.5 %Cavalier County: 21.6 %Dickey County: 24.6 %Divide County: 23.1 %Dunn County: 25.9 %Eddy County: 22.1 %Emmons County: 20.7 %Foster County: 22.1 %Golden Valley County: 24.5 %Grand Forks County: 21.1 %Grant County: 18.6 %Griggs County: 20.3 %Hettinger County: 21.9 %Kidder County: 21.6 %LaMoure County: 23 %Logan County: 23.5 %McHenry County: 23.6 %McIntosh County: 18.5 %McKenzie County: 30 %McLean County: 22.3 %Mercer County: 23.6 %Morton County: 23.6 %Mountrail County: 28.4 %Nelson County: 17.6 %Oliver County: 24.8 %Pembina County: 21.1 %Pierce County: 21.9 %Ramsey County: 23.2 %Ransom County: 24.2 %Renville County: 22.1 %Richland County: 22.2 %Rolette County: 34.1 %Sargent County: 21.3 %Sheridan County: 18.4 %Sioux County: 35.7 %Slope County: 21.1 %Stark County: 26.1 %Steele County: 21.5 %Stutsman County: 20 %Towner County: 21.9 %Traill County: 23.1 %Walsh County: 22.8 %Ward County: 24.5 %Wells County: 20.3 %Williams County: 27.7 %
  • Under 20
  • 20 to 22
  • 22 to 24
  • 24 to 25
  • 25 and over
%, 2020. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2020

Sioux County: 35.7 %Sioux County35.7Benson County: 35.3 %Benson County35.3Rolette County: 34.1 %Rolette County34.1McKenzie County: 30 %McKenzie County30Mountrail County: 28.4 %Mountrail County28.4Williams County: 27.7 %Williams County27.7Stark County: 26.1 %Stark County26.1Dunn County: 25.9 %Dunn County25.9Oliver County: 24.8 %Oliver County24.8Burke County: 24.8 %Burke County24.8Dickey County: 24.6 %Dickey County24.6Ward County: 24.5 %Ward County24.5Golden Valley County: 24.5 %Golden Valley County24.5Ransom County: 24.2 %Ransom County24.2Bowman County: 23.7 %Bowman County23.7McHenry County: 23.6 %McHenry County23.6Mercer County: 23.6 %Mercer County23.6Morton County: 23.6 %Morton County23.6Logan County: 23.5 %Logan County23.5Ramsey County: 23.2 %Ramsey County23.2Burleigh County: 23.1 %Burleigh County23.1Divide County: 23.1 %Divide County23.1Traill County: 23.1 %Traill County23.1LaMoure County: 23 %LaMoure County23Walsh County: 22.8 %Walsh County22.8Cass County: 22.5 %Cass County22.5McLean County: 22.3 %McLean County22.3Richland County: 22.2 %Richland County22.2Eddy County: 22.1 %Eddy County22.1Foster County: 22.1 %Foster County22.1Renville County: 22.1 %Renville County22.1Pierce County: 21.9 %Pierce County21.9Towner County: 21.9 %Towner County21.9Hettinger County: 21.9 %Hettinger County21.9Kidder County: 21.6 %Kidder County21.6Cavalier County: 21.6 %Cavalier County21.6Bottineau County: 21.6 %Bottineau County21.6Steele County: 21.5 %Steele County21.5Sargent County: 21.3 %Sargent County21.3Grand Forks County: 21.1 %Grand Forks County21.1Pembina County: 21.1 %Pembina County21.1Slope County: 21.1 %Slope County21.1Emmons County: 20.7 %Emmons County20.7Billings County: 20.4 %Billings County20.4Griggs County: 20.3 %Griggs County20.3Adams County: 20.3 %Adams County20.3Wells County: 20.3 %Wells County20.3Stutsman County: 20 %Stutsman County20Barnes County: 19.5 %Barnes County19.5Grant County: 18.6 %Grant County18.6McIntosh County: 18.5 %McIntosh County18.5Sheridan County: 18.4 %Sheridan County18.4Nelson County: 17.6 %Nelson County17.6Sioux County: 35.7 %Sioux County35.7Benson County: 35.3 %Benson County35.3Rolette County: 34.1 %Rolette County34.1McKenzie County: 30 %McKenzie County30Mountrail County: 28.4 %Mountrail County28.4Williams County: 27.7 %Williams County27.7Stark County: 26.1 %Stark County26.1Dunn County: 25.9 %Dunn County25.9Oliver County: 24.8 %Oliver County24.8Burke County: 24.8 %Burke County24.8Dickey County: 24.6 %Dickey County24.6Ward County: 24.5 %Ward County24.5Golden Valley County: 24.5 %Golden Valley County24.5Ransom County: 24.2 %Ransom County24.2Bowman County: 23.7 %Bowman County23.7McHenry County: 23.6 %McHenry County23.6Mercer County: 23.6 %Mercer County23.6Morton County: 23.6 %Morton County23.6Logan County: 23.5 %Logan County23.5Ramsey County: 23.2 %Ramsey County23.2Burleigh County: 23.1 %Burleigh County23.1Divide County: 23.1 %Divide County23.1Traill County: 23.1 %Traill County23.1LaMoure County: 23 %LaMoure County23Walsh County: 22.8 %Walsh County22.8Cass County: 22.5 %Cass County22.5McLean County: 22.3 %McLean County22.3Richland County: 22.2 %Richland County22.2Eddy County: 22.1 %Eddy County22.1Foster County: 22.1 %Foster County22.1Renville County: 22.1 %Renville County22.1Pierce County: 21.9 %Pierce County21.9Towner County: 21.9 %Towner County21.9Hettinger County: 21.9 %Hettinger County21.9Kidder County: 21.6 %Kidder County21.6Cavalier County: 21.6 %Cavalier County21.6Bottineau County: 21.6 %Bottineau County21.6Steele County: 21.5 %Steele County21.5Sargent County: 21.3 %Sargent County21.3Grand Forks County: 21.1 %Grand Forks County21.1Pembina County: 21.1 %Pembina County21.1Slope County: 21.1 %Slope County21.1Emmons County: 20.7 %Emmons County20.7Billings County: 20.4 %Billings County20.4Griggs County: 20.3 %Griggs County20.3Adams County: 20.3 %Adams County20.3Wells County: 20.3 %Wells County20.3Stutsman County: 20 %Stutsman County20Barnes County: 19.5 %Barnes County19.5Grant County: 18.6 %Grant County18.6McIntosh County: 18.5 %McIntosh County18.5Sheridan County: 18.4 %Sheridan County18.4Nelson County: 17.6 %Nelson County17.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2020 (%)Change on 2019
1Sioux County35.7+0.4 pts
2Benson County35.3+1.5 pts
3Rolette County34.1+0.4 pts
4McKenzie County30+1 pts
5Mountrail County28.4+0.3 pts
6Williams County27.7+0.6 pts
7Stark County26.1+0.5 pts
8Dunn County25.90 pts
9Oliver County24.8+0.1 pts
10Burke County24.8+0.2 pts
11Dickey County24.6-0.7 pts
12Ward County24.5+0.2 pts
13Golden Valley County24.5-1.8 pts
14Ransom County24.2+0.1 pts
15Bowman County23.7+0.3 pts
16McHenry County23.60 pts
17Mercer County23.6+0.1 pts
18Morton County23.6-0.1 pts
19Logan County23.50 pts
20Ramsey County23.2+0.4 pts
21Burleigh County23.1-0 pts
22Divide County23.1-0.6 pts
23Traill County23.1+0.1 pts
24LaMoure County23+0.6 pts
25Walsh County22.8-0.2 pts
26Cass County22.5-0.1 pts
27McLean County22.3-0.1 pts
28Richland County22.20 pts
29Eddy County22.10 pts
30Foster County22.1-0.5 pts
31Renville County22.1-0.8 pts
32Pierce County21.9-0.4 pts
33Towner County21.9-1.7 pts
34Hettinger County21.9-0.4 pts
35Kidder County21.6-0.1 pts
36Cavalier County21.6-0.7 pts
37Bottineau County21.60 pts
38Steele County21.5-0.3 pts
39Sargent County21.3+0.7 pts
40Grand Forks County21.1+0.1 pts
41Pembina County21.1-0.2 pts
42Slope County21.1-0.5 pts
43Emmons County20.7+0.7 pts
44Billings County20.4-1.1 pts
45Griggs County20.3-1.4 pts
46Adams County20.3+0.7 pts
47Wells County20.3-0.2 pts
48Stutsman County20-0.1 pts
49Barnes County19.5-0.2 pts
50Grant County18.6-0.9 pts
51McIntosh County18.5-0.5 pts
52Sheridan County18.4-0.7 pts
53Nelson County17.6-0.7 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, 2020) [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, 2020. 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=2020. 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, 2020. 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=2020.

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, 2020 [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=2020 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_north_dakota_2020,
  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, 2020}},
  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=2020. 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, 2020
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=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/north-dakota-counties?period=2020.
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  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in North Dakota by population under 18 using official data, and cite the source.
rank_places {"indicator":"population_0_17_share","level":"province","within":"North Dakota","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_0_17_share&level=province&within=North%20Dakota&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest population under 18?

Sioux County, with 35.7% in 2020, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Nelson County, with 17.6% in 2020.

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