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 2019, at 66%. Griggs County had the lowest, at 49%. The median was 54.3% and the figure for North Dakota was 61%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest66Grand Forks County
Lowest49Griggs County
Median54.353 counties
North Dakota61History

Map of counties, 2019

Adams County: 51.5 %Barnes County: 57.9 %Benson County: 51.1 %Billings County: 58.6 %Bottineau County: 54 %Bowman County: 53.5 %Burke County: 55.2 %Burleigh County: 60.5 %Cass County: 65.2 %Cavalier County: 51 %Dickey County: 54 %Divide County: 53.4 %Dunn County: 57.3 %Eddy County: 53.6 %Emmons County: 51.3 %Foster County: 55.9 %Golden Valley County: 51.1 %Grand Forks County: 66 %Grant County: 49.3 %Griggs County: 49 %Hettinger County: 52.7 %Kidder County: 54.2 %LaMoure County: 52.4 %Logan County: 50.3 %McHenry County: 54.8 %McIntosh County: 49.2 %McKenzie County: 62.4 %McLean County: 52.9 %Mercer County: 56.9 %Morton County: 59.5 %Mountrail County: 58.8 %Nelson County: 51.1 %Oliver County: 54.2 %Pembina County: 54.3 %Pierce County: 53.3 %Ramsey County: 56.9 %Ransom County: 54.9 %Renville County: 56.1 %Richland County: 59.6 %Rolette County: 52.8 %Sargent County: 56.6 %Sheridan County: 52.2 %Sioux County: 55.3 %Slope County: 57.6 %Stark County: 61.3 %Steele County: 53.7 %Stutsman County: 60.3 %Towner County: 53.5 %Traill County: 57 %Walsh County: 55.2 %Ward County: 62.7 %Wells County: 51.2 %Williams County: 64 %
  • Under 51
  • 51 to 53
  • 53 to 54
  • 54 to 57
  • 57 to 60
  • 60 and over
%, 2019. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2019

Grand Forks County: 66 %Grand Forks County66Cass County: 65.2 %Cass County65.2Williams County: 64 %Williams County64Ward County: 62.7 %Ward County62.7McKenzie County: 62.4 %McKenzie County62.4Stark County: 61.3 %Stark County61.3Burleigh County: 60.5 %Burleigh County60.5Stutsman County: 60.3 %Stutsman County60.3Richland County: 59.6 %Richland County59.6Morton County: 59.5 %Morton County59.5Mountrail County: 58.8 %Mountrail County58.8Billings County: 58.6 %Billings County58.6Barnes County: 57.9 %Barnes County57.9Slope County: 57.6 %Slope County57.6Dunn County: 57.3 %Dunn County57.3Traill County: 57 %Traill County57Mercer County: 56.9 %Mercer County56.9Ramsey County: 56.9 %Ramsey County56.9Sargent County: 56.6 %Sargent County56.6Renville County: 56.1 %Renville County56.1Foster County: 55.9 %Foster County55.9Sioux County: 55.3 %Sioux County55.3Walsh County: 55.2 %Walsh County55.2Burke County: 55.2 %Burke County55.2Ransom County: 54.9 %Ransom County54.9McHenry County: 54.8 %McHenry County54.8Pembina County: 54.3 %Pembina County54.3Kidder County: 54.2 %Kidder County54.2Oliver County: 54.2 %Oliver County54.2Dickey County: 54 %Dickey County54Bottineau County: 54 %Bottineau County54Steele County: 53.7 %Steele County53.7Eddy County: 53.6 %Eddy County53.6Towner County: 53.5 %Towner County53.5Bowman County: 53.5 %Bowman County53.5Divide County: 53.4 %Divide County53.4Pierce County: 53.3 %Pierce County53.3McLean County: 52.9 %McLean County52.9Rolette County: 52.8 %Rolette County52.8Hettinger County: 52.7 %Hettinger County52.7LaMoure County: 52.4 %LaMoure County52.4Sheridan County: 52.2 %Sheridan County52.2Adams County: 51.5 %Adams County51.5Emmons County: 51.3 %Emmons County51.3Wells County: 51.2 %Wells County51.2Benson County: 51.1 %Benson County51.1Nelson County: 51.1 %Nelson County51.1Golden Valley County: 51.1 %Golden Valley County51.1Cavalier County: 51 %Cavalier County51Logan County: 50.3 %Logan County50.3Grant County: 49.3 %Grant County49.3McIntosh County: 49.2 %McIntosh County49.2Griggs County: 49 %Griggs County49Grand Forks County: 66 %Grand Forks County66Cass County: 65.2 %Cass County65.2Williams County: 64 %Williams County64Ward County: 62.7 %Ward County62.7McKenzie County: 62.4 %McKenzie County62.4Stark County: 61.3 %Stark County61.3Burleigh County: 60.5 %Burleigh County60.5Stutsman County: 60.3 %Stutsman County60.3Richland County: 59.6 %Richland County59.6Morton County: 59.5 %Morton County59.5Mountrail County: 58.8 %Mountrail County58.8Billings County: 58.6 %Billings County58.6Barnes County: 57.9 %Barnes County57.9Slope County: 57.6 %Slope County57.6Dunn County: 57.3 %Dunn County57.3Traill County: 57 %Traill County57Mercer County: 56.9 %Mercer County56.9Ramsey County: 56.9 %Ramsey County56.9Sargent County: 56.6 %Sargent County56.6Renville County: 56.1 %Renville County56.1Foster County: 55.9 %Foster County55.9Sioux County: 55.3 %Sioux County55.3Walsh County: 55.2 %Walsh County55.2Burke County: 55.2 %Burke County55.2Ransom County: 54.9 %Ransom County54.9McHenry County: 54.8 %McHenry County54.8Pembina County: 54.3 %Pembina County54.3Kidder County: 54.2 %Kidder County54.2Oliver County: 54.2 %Oliver County54.2Dickey County: 54 %Dickey County54Bottineau County: 54 %Bottineau County54Steele County: 53.7 %Steele County53.7Eddy County: 53.6 %Eddy County53.6Towner County: 53.5 %Towner County53.5Bowman County: 53.5 %Bowman County53.5Divide County: 53.4 %Divide County53.4Pierce County: 53.3 %Pierce County53.3McLean County: 52.9 %McLean County52.9Rolette County: 52.8 %Rolette County52.8Hettinger County: 52.7 %Hettinger County52.7LaMoure County: 52.4 %LaMoure County52.4Sheridan County: 52.2 %Sheridan County52.2Adams County: 51.5 %Adams County51.5Emmons County: 51.3 %Emmons County51.3Wells County: 51.2 %Wells County51.2Benson County: 51.1 %Benson County51.1Nelson County: 51.1 %Nelson County51.1Golden Valley County: 51.1 %Golden Valley County51.1Cavalier County: 51 %Cavalier County51Logan County: 50.3 %Logan County50.3Grant County: 49.3 %Grant County49.3McIntosh County: 49.2 %McIntosh County49.2Griggs County: 49 %Griggs County49
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2019 (%)Change on 2018
1Grand Forks County66-0.7 pts
2Cass County65.2-0.4 pts
3Williams County64-0.4 pts
4Ward County62.7-0.5 pts
5McKenzie County62.40 pts
6Stark County61.3-0.4 pts
7Burleigh County60.5-0.5 pts
8Stutsman County60.3-0.6 pts
9Richland County59.6-0.8 pts
10Morton County59.5-0.4 pts
11Mountrail County58.8-0.6 pts
12Billings County58.6+0.3 pts
13Barnes County57.9+0.2 pts
14Slope County57.60 pts
15Dunn County57.3-1.8 pts
16Traill County57-0.6 pts
17Mercer County56.9-0.8 pts
18Ramsey County56.9-0.3 pts
19Sargent County56.6-0.8 pts
20Renville County56.1-0.3 pts
21Foster County55.9-0.2 pts
22Sioux County55.3-0.2 pts
23Walsh County55.2-0.4 pts
24Burke County55.2-0.4 pts
25Ransom County54.9-0.4 pts
26McHenry County54.8-0.8 pts
27Pembina County54.3-0.7 pts
28Kidder County54.2-1.1 pts
29Oliver County54.2-0.3 pts
30Dickey County54-0.9 pts
31Bottineau County54-1.1 pts
32Steele County53.7-1.8 pts
33Eddy County53.6-0.4 pts
34Towner County53.5-0.7 pts
35Bowman County53.5-1 pts
36Divide County53.4-1.3 pts
37Pierce County53.3-0.6 pts
38McLean County52.9-1.2 pts
39Rolette County52.8-0.6 pts
40Hettinger County52.7-0.6 pts
41LaMoure County52.4-0.3 pts
42Sheridan County52.2+0.2 pts
43Adams County51.5-1.7 pts
44Emmons County51.3-0.6 pts
45Wells County51.2-0.2 pts
46Benson County51.1-0.9 pts
47Nelson County51.1-0.7 pts
48Golden Valley County51.1-1.1 pts
49Cavalier County51-0.2 pts
50Logan County50.3-0.6 pts
51Grant County49.3-0.6 pts
52McIntosh County49.2-0.2 pts
53Griggs County49-0.9 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, 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 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, 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-18-64/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 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, 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-18-64/north-dakota-counties?period=2019.

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, 2019 [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=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 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, 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-18-64/north-dakota-counties?period=2019. 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, 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-18-64/north-dakota-counties?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/north-dakota-counties?period=2019.
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 66% in 2019, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Griggs County, with 49% 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 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