4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Killdeer | 1 | 899 | 938 | -0.66% | 418 | 2 | City |
| Dunn Center | 2 | 230 | 227 | 0.44% | 588 | 0 | City |
| Halliday | 3 | 230 | 239 | -0.43% | 499 | 0 | City |
| Dodge | 4 | 82 | 85 | 0% | 176 | 0 | City |
Killdeer is the largest city in Dunn County, with a population of 899.
Dodge is the smallest city in Dunn County, with a population of 82.
There are 4 cities in Dunn County, North Dakota.