7 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Aurora | 1 | 4,740 | 4,665 | 0.28% | 1,368 | 3 | City |
| Hampton | 2 | 445 | 432 | 0.45% | 1,286 | 0 | Village |
| Giltner | 3 | 422 | 406 | 0.72% | 1,068 | 0 | Village |
| Phillips | 4 | 334 | 319 | 0.91% | 1,140 | 0 | Village |
| Marquette | 5 | 240 | 233 | 0.42% | 1,159 | 0 | Village |
| Hordville | 6 | 136 | 130 | 0.74% | 509 | 0 | Village |
| Lushton | 7 | 30 | 27 | 3.45% | 211 | 0 | Village |
Aurora is the largest city in Hamilton County, with a population of 4,740.
Lushton is the smallest city in Hamilton County, with a population of 30.
There are 7 cities in Hamilton County, Nebraska.