| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lexington | 1 | 11,309 | 10,684 | 1.19% | 2,228 | 5 | City |
| Cozad | 2 | 3,916 | 3,979 | -0.2% | 1,497 | 3 | City |
| Gothenburg | 3 | 3,421 | 3,475 | -0.26% | 942 | 4 | City |
| Overton | 4 | 591 | 605 | -0.51% | 1,094 | 1 | Village |
| Sumner | 5 | 242 | 252 | -0.82% | 820 | 0 | Village |
| Farnam | 6 | 178 | 179 | 0% | 264 | 1 | Village |
| Eddyville | 7 | 84 | 84 | 0% | 304 | 0 | Village |
Lexington is the largest city in Dawson County, with a population of 11,309.
Eddyville is the smallest city in Dawson County, with a population of 84.
There are 7 cities in Dawson County, Nebraska.