5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Killdeer | 1 | 888 | 938 | -1.11% | 480 | 1.85 | City |
| Dunn Center | 2 | 227 | 227 | 0% | 581 | 0.39 | City |
| Halliday | 3 | 224 | 238 | -1.32% | 486 | 0.46 | City |
| Dodge | 4 | 84 | 88 | -1.18% | 180 | 0.47 | City |
| Manning | 5 | 62 | 95 | 6.9% | 108 | 0.57 | CDP |
Killdeer is the largest city in Dunn County, with a population of 888.
Manning is the smallest city in Dunn County.
There are 5 cities in Dunn County, North Dakota.