# Counties in North Dakota by population aged 18 to 64, 2025

All 53 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_18_64_share`
- Unit: %
- Definition: 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.
- Source: 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: 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.
- Web page: https://invokely.ai/rankings/population-18-64/north-dakota-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Cass County | 64.5 |
| 2 | Grand Forks County | 64.1 |
| 3 | Ward County | 60.9 |
| 4 | Williams County | 60.5 |
| 5 | McKenzie County | 59.2 |
| 6 | Burleigh County | 58.7 |
| 7 | Stark County | 58.4 |
| 8 | Stutsman County | 58 |
| 9 | Morton County | 57.3 |
| 10 | Richland County | 56.7 |
| 11 | Barnes County | 56.3 |
| 12 | Traill County | 55.5 |
| 13 | Sioux County | 55.5 |
| 14 | Dunn County | 55.3 |
| 15 | Mountrail County | 55.1 |
| 16 | Ransom County | 54.4 |
| 17 | Billings County | 53.9 |
| 18 | Renville County | 53.5 |
| 19 | Ramsey County | 53.2 |
| 20 | Dickey County | 53.1 |
| 21 | Sargent County | 53.1 |
| 22 | Walsh County | 52.9 |
| 23 | Rolette County | 52.6 |
| 24 | Mercer County | 52 |
| 25 | Bottineau County | 51.8 |
| 26 | Foster County | 51.7 |
| 27 | McHenry County | 51.6 |
| 28 | Burke County | 51.6 |
| 29 | Divide County | 51 |
| 30 | Pierce County | 51 |
| 31 | Hettinger County | 50.9 |
| 32 | Pembina County | 50.7 |
| 33 | Steele County | 50.5 |
| 34 | Eddy County | 50 |
| 35 | McLean County | 49.9 |
| 36 | Cavalier County | 49.5 |
| 37 | Oliver County | 49.3 |
| 38 | Towner County | 49.2 |
| 39 | Benson County | 49.2 |
| 40 | Adams County | 49.1 |
| 41 | Griggs County | 49.1 |
| 42 | Wells County | 49.1 |
| 43 | Kidder County | 49 |
| 44 | Emmons County | 48.8 |
| 45 | Bowman County | 48.8 |
| 46 | Nelson County | 48.8 |
| 47 | LaMoure County | 48.1 |
| 48 | Logan County | 47.6 |
| 49 | Golden Valley County | 47.2 |
| 50 | Grant County | 46.9 |
| 51 | Sheridan County | 46.2 |
| 52 | Slope County | 45.9 |
| 53 | McIntosh County | 45.4 |