Ranking of North Dakota Counties By Total Voting-age Population (18yrs and over) from Census 2020
Updated on February 22, 2026.
According to the data from the US 2020 Census, as at April 2020, among all the counties in North Dakota, Cass County had the highest voting-age population (18 years and over) (142.93K), followed by Burleigh County (75.62K), and Grand Forks County (57.78K).
The chart below shows the top 10 counties with high voting-age population, and the table below shows the ranking of all North Dakota counties based on voting-age population.
You can also see the ranking of counties by population for other states as well as for the whole United States.
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Related Topics: North Dakota Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of North Dakota Counties By Total Voting-age Population from Census 2020
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| Rank | County | Voting-age Population |
|---|---|---|
| 1 | Cass County | 142934 |
| 2 | Burleigh County | 75621 |
| 3 | Grand Forks County | 57784 |
| 4 | Ward County | 52806 |
| 5 | Williams County | 29793 |
| 6 | Morton County | 25365 |
| 7 | Stark County | 24973 |
| 8 | Stutsman County | 17254 |
| 9 | Richland County | 12831 |
| 10 | McKenzie County | 10366 |
| 11 | Ramsey County | 8927 |
| 12 | Barnes County | 8740 |
| 13 | Rolette County | 8161 |
| 14 | Walsh County | 8159 |
| 15 | McLean County | 7579 |
| 16 | Mountrail County | 7075 |
| 17 | Mercer County | 6358 |
| 18 | Traill County | 6131 |
| 19 | Pembina County | 5365 |
| 20 | Bottineau County | 4981 |
| 21 | Ransom County | 4315 |
| 22 | McHenry County | 4099 |
| 23 | Benson County | 3926 |
| 24 | Dickey County | 3774 |
| 25 | Wells County | 3180 |
| 26 | LaMoure County | 3170 |
| 27 | Pierce County | 3096 |
| 28 | Sargent County | 3057 |
| 29 | Dunn County | 3056 |
| 30 | Cavalier County | 2885 |
| 31 | Foster County | 2627 |
| 32 | Emmons County | 2615 |
| 33 | Sioux County | 2544 |
| 34 | Nelson County | 2473 |
| 35 | Bowman County | 2292 |
| 36 | McIntosh County | 2054 |
| 37 | Hettinger County | 1943 |
| 38 | Grant County | 1885 |
| 39 | Kidder County | 1877 |
| 40 | Griggs County | 1827 |
| 41 | Eddy County | 1824 |
| 42 | Renville County | 1778 |
| 43 | Adams County | 1767 |
| 44 | Divide County | 1691 |
| 45 | Towner County | 1668 |
| 46 | Burke County | 1641 |
| 47 | Logan County | 1424 |
| 48 | Oliver County | 1414 |
| 49 | Steele County | 1407 |
| 50 | Golden Valley County | 1274 |
| 51 | Sheridan County | 1016 |
| 52 | Billings County | 737 |
| 53 | Slope County | 554 |
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