10 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Indian Lake | 1 | 1,370 | 1,355 | 0.29% | 5 | 252 | Town |
| Lake Pleasant | 2 | 899 | 894 | 0.11% | 5 | 188 | Town |
| Long Lake | 3 | 804 | 784 | 0.75% | 2 | 407 | Town |
| Wells | 4 | 664 | 681 | -0.3% | 4 | 177 | Town |
| Hope | 5 | 416 | 402 | 0.97% | 10 | 41 | Town |
| Speculator | 6 | 399 | 401 | 0% | 9 | 45 | Village |
| Inlet | 7 | 356 | 352 | -0.28% | 6 | 62 | Town |
| Arietta | 8 | 288 | 290 | 0% | 1 | 317 | Town |
| Benson | 9 | 222 | 222 | 0.45% | 3 | 83 | Town |
| Morehouse | 10 | 87 | 90 | -1.14% | 0.00 | 191 | Town |
Indian Lake is the largest city in Hamilton County, with a population of 1,370.
Morehouse is the smallest city in Hamilton County, with a population of 87.
There are 10 cities in Hamilton County, New York.