| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Aurora | 1 | 4,806 | 4,680 | 0.4% | 1,387 | 3 | City |
| Hampton | 2 | 448 | 433 | 0.45% | 1,295 | 0 | Village |
| Giltner | 3 | 424 | 405 | 0.71% | 1,073 | 0 | Village |
| Phillips | 4 | 336 | 321 | 0.9% | 1,147 | 0 | Village |
| Marquette | 5 | 238 | 229 | 0.42% | 1,150 | 0 | Village |
| Hordville | 6 | 138 | 131 | 0.73% | 517 | 0 | Village |
| Lushton | 7 | 27 | 25 | 0% | 190 | 0 | Village |
Aurora is the largest city in Hamilton County, with a population of 4,806.
Lushton is the smallest city in Hamilton County, with a population of 27.
There are 7 cities in Hamilton County, Nebraska.