Data / Rankings / Population aged 18 to 64 / Counties in North Dakota

Counties in North Dakota by population aged 18 to 64

Grand Forks County had the highest population aged 18 to 64 of 53 counties in 2020, at 65.5%. Benson County had the lowest, at 49.4%. The median was 54% and the figure for North Dakota was 60.5%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest65.5Grand Forks County
Lowest49.4Benson County
Median5453 counties
North Dakota60.5History

Map of counties, 2020

Adams County: 50.5 %Barnes County: 57.5 %Benson County: 49.4 %Billings County: 59.4 %Bottineau County: 53.6 %Bowman County: 52.4 %Burke County: 54.5 %Burleigh County: 60 %Cass County: 64.8 %Cavalier County: 51.4 %Dickey County: 53.6 %Divide County: 53.9 %Dunn County: 57.3 %Eddy County: 52.2 %Emmons County: 50.6 %Foster County: 55.5 %Golden Valley County: 51.3 %Grand Forks County: 65.5 %Grant County: 50.1 %Griggs County: 49.8 %Hettinger County: 52.6 %Kidder County: 53.3 %LaMoure County: 51.2 %Logan County: 50.1 %McHenry County: 54 %McIntosh County: 49.4 %McKenzie County: 61.5 %McLean County: 52.4 %Mercer County: 56 %Morton County: 59.2 %Mountrail County: 58.2 %Nelson County: 50.8 %Oliver County: 53.4 %Pembina County: 53.8 %Pierce County: 52.7 %Ramsey County: 55.9 %Ransom County: 54.3 %Renville County: 55.6 %Richland County: 58.8 %Rolette County: 51.9 %Sargent County: 56.3 %Sheridan County: 51.6 %Sioux County: 54.3 %Slope County: 54.1 %Stark County: 60.8 %Steele County: 54.2 %Stutsman County: 59.9 %Towner County: 52.7 %Traill County: 56.5 %Walsh County: 54.9 %Ward County: 62.1 %Wells County: 50.9 %Williams County: 63.5 %
  • Under 51
  • 51 to 53
  • 53 to 54
  • 54 to 56
  • 56 to 59
  • 59 and over
%, 2020. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2020

Grand Forks County: 65.5 %Grand Forks County65.5Cass County: 64.8 %Cass County64.8Williams County: 63.5 %Williams County63.5Ward County: 62.1 %Ward County62.1McKenzie County: 61.5 %McKenzie County61.5Stark County: 60.8 %Stark County60.8Burleigh County: 60 %Burleigh County60Stutsman County: 59.9 %Stutsman County59.9Billings County: 59.4 %Billings County59.4Morton County: 59.2 %Morton County59.2Richland County: 58.8 %Richland County58.8Mountrail County: 58.2 %Mountrail County58.2Barnes County: 57.5 %Barnes County57.5Dunn County: 57.3 %Dunn County57.3Traill County: 56.5 %Traill County56.5Sargent County: 56.3 %Sargent County56.3Mercer County: 56 %Mercer County56Ramsey County: 55.9 %Ramsey County55.9Renville County: 55.6 %Renville County55.6Foster County: 55.5 %Foster County55.5Walsh County: 54.9 %Walsh County54.9Burke County: 54.5 %Burke County54.5Ransom County: 54.3 %Ransom County54.3Sioux County: 54.3 %Sioux County54.3Steele County: 54.2 %Steele County54.2Slope County: 54.1 %Slope County54.1McHenry County: 54 %McHenry County54Divide County: 53.9 %Divide County53.9Pembina County: 53.8 %Pembina County53.8Dickey County: 53.6 %Dickey County53.6Bottineau County: 53.6 %Bottineau County53.6Oliver County: 53.4 %Oliver County53.4Kidder County: 53.3 %Kidder County53.3Towner County: 52.7 %Towner County52.7Pierce County: 52.7 %Pierce County52.7Hettinger County: 52.6 %Hettinger County52.6Bowman County: 52.4 %Bowman County52.4McLean County: 52.4 %McLean County52.4Eddy County: 52.2 %Eddy County52.2Rolette County: 51.9 %Rolette County51.9Sheridan County: 51.6 %Sheridan County51.6Cavalier County: 51.4 %Cavalier County51.4Golden Valley County: 51.3 %Golden Valley County51.3LaMoure County: 51.2 %LaMoure County51.2Wells County: 50.9 %Wells County50.9Nelson County: 50.8 %Nelson County50.8Emmons County: 50.6 %Emmons County50.6Adams County: 50.5 %Adams County50.5Logan County: 50.1 %Logan County50.1Grant County: 50.1 %Grant County50.1Griggs County: 49.8 %Griggs County49.8McIntosh County: 49.4 %McIntosh County49.4Benson County: 49.4 %Benson County49.4Grand Forks County: 65.5 %Grand Forks County65.5Cass County: 64.8 %Cass County64.8Williams County: 63.5 %Williams County63.5Ward County: 62.1 %Ward County62.1McKenzie County: 61.5 %McKenzie County61.5Stark County: 60.8 %Stark County60.8Burleigh County: 60 %Burleigh County60Stutsman County: 59.9 %Stutsman County59.9Billings County: 59.4 %Billings County59.4Morton County: 59.2 %Morton County59.2Richland County: 58.8 %Richland County58.8Mountrail County: 58.2 %Mountrail County58.2Barnes County: 57.5 %Barnes County57.5Dunn County: 57.3 %Dunn County57.3Traill County: 56.5 %Traill County56.5Sargent County: 56.3 %Sargent County56.3Mercer County: 56 %Mercer County56Ramsey County: 55.9 %Ramsey County55.9Renville County: 55.6 %Renville County55.6Foster County: 55.5 %Foster County55.5Walsh County: 54.9 %Walsh County54.9Burke County: 54.5 %Burke County54.5Ransom County: 54.3 %Ransom County54.3Sioux County: 54.3 %Sioux County54.3Steele County: 54.2 %Steele County54.2Slope County: 54.1 %Slope County54.1McHenry County: 54 %McHenry County54Divide County: 53.9 %Divide County53.9Pembina County: 53.8 %Pembina County53.8Dickey County: 53.6 %Dickey County53.6Bottineau County: 53.6 %Bottineau County53.6Oliver County: 53.4 %Oliver County53.4Kidder County: 53.3 %Kidder County53.3Towner County: 52.7 %Towner County52.7Pierce County: 52.7 %Pierce County52.7Hettinger County: 52.6 %Hettinger County52.6Bowman County: 52.4 %Bowman County52.4McLean County: 52.4 %McLean County52.4Eddy County: 52.2 %Eddy County52.2Rolette County: 51.9 %Rolette County51.9Sheridan County: 51.6 %Sheridan County51.6Cavalier County: 51.4 %Cavalier County51.4Golden Valley County: 51.3 %Golden Valley County51.3LaMoure County: 51.2 %LaMoure County51.2Wells County: 50.9 %Wells County50.9Nelson County: 50.8 %Nelson County50.8Emmons County: 50.6 %Emmons County50.6Adams County: 50.5 %Adams County50.5Logan County: 50.1 %Logan County50.1Grant County: 50.1 %Grant County50.1Griggs County: 49.8 %Griggs County49.8McIntosh County: 49.4 %McIntosh County49.4Benson County: 49.4 %Benson County49.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2020 (%)Change on 2019
1Grand Forks County65.5-0.5 pts
2Cass County64.8-0.3 pts
3Williams County63.5-0.5 pts
4Ward County62.1-0.6 pts
5McKenzie County61.5-0.9 pts
6Stark County60.8-0.5 pts
7Burleigh County60-0.6 pts
8Stutsman County59.9-0.4 pts
9Billings County59.4+0.7 pts
10Morton County59.2-0.4 pts
11Richland County58.8-0.8 pts
12Mountrail County58.2-0.6 pts
13Barnes County57.5-0.3 pts
14Dunn County57.30 pts
15Traill County56.5-0.4 pts
16Sargent County56.3-0.3 pts
17Mercer County56-1 pts
18Ramsey County55.9-1 pts
19Renville County55.6-0.5 pts
20Foster County55.5-0.4 pts
21Walsh County54.9-0.3 pts
22Burke County54.5-0.7 pts
23Ransom County54.3-0.6 pts
24Sioux County54.3-1.1 pts
25Steele County54.2+0.6 pts
26Slope County54.1-3.5 pts
27McHenry County54-0.8 pts
28Divide County53.9+0.5 pts
29Pembina County53.8-0.6 pts
30Dickey County53.6-0.4 pts
31Bottineau County53.6-0.4 pts
32Oliver County53.4-0.7 pts
33Kidder County53.3-0.9 pts
34Towner County52.7-0.8 pts
35Pierce County52.7-0.6 pts
36Hettinger County52.6-0.1 pts
37Bowman County52.4-1.1 pts
38McLean County52.4-0.5 pts
39Eddy County52.2-1.4 pts
40Rolette County51.9-0.9 pts
41Sheridan County51.6-0.6 pts
42Cavalier County51.4+0.4 pts
43Golden Valley County51.3+0.2 pts
44LaMoure County51.2-1.2 pts
45Wells County50.9-0.3 pts
46Nelson County50.8-0.3 pts
47Emmons County50.6-0.7 pts
48Adams County50.5-1 pts
49Logan County50.1-0.2 pts
50Grant County50.1+0.8 pts
51Griggs County49.8+0.8 pts
52McIntosh County49.4+0.2 pts
53Benson County49.4-1.7 pts

Other periods

About this ranking

Residents aged 18 to 64 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.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

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 18 to 64 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 18 to 64 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 aged 18 to 64, 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 18 to 64 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 aged 18 to 64, 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-18-64/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 18 to 64 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 aged 18 to 64, 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-18-64/north-dakota-counties?period=2020.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 18 to 64 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 aged 18 to 64, 2020 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/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 18 to 64 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 aged 18 to 64, 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-18-64/north-dakota-counties?period=2020. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 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 18 to 64 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 aged 18 to 64, 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-18-64/north-dakota-counties?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/north-dakota-counties?period=2020.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 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 aged 18 to 64 using official data, and cite the source.
rank_places {"indicator":"population_18_64_share","level":"province","within":"North Dakota","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_18_64_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 aged 18 to 64?

Grand Forks County, with 65.5% in 2020, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Benson County, with 49.4% 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 18 to 64 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 aged 18 to 64: other rankings

Counties in North Dakota: more rankings