| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Queensbury | 1 | 28,928 | 29,114 | -0.42% | 464 | 62 | Town |
| Glens Falls | 2 | 14,288 | 14,779 | -0.66% | 3,710 | 4 | City |
| Warrensburg | 3 | 3,919 | 3,955 | -0.46% | 62 | 63 | Town |
| Lake George | 4 | 3,446 | 3,489 | -0.52% | 116 | 30 | Town |
| Lake Luzerne | 5 | 3,053 | 3,081 | -0.46% | 58 | 53 | Town |
| Johnsburg | 6 | 2,123 | 2,138 | -0.42% | 10 | 204 | Town |
| Bolton | 7 | 1,984 | 2,009 | -0.5% | 31 | 64 | Town |
| Horicon | 8 | 1,450 | 1,466 | -0.48% | 22 | 66 | Town |
| Thurman | 9 | 1,085 | 1,096 | -0.46% | 12 | 91 | Town |
| Lake George | 10 | 974 | 984 | -0.1% | 1,662 | 1 | Village |
| Stony Creek | 11 | 749 | 756 | -0.53% | 9.0 | 82 | Town |
| Hague | 12 | 626 | 634 | -0.63% | 10 | 64 | Town |
Queensbury is the largest city in Warren County, with a population of 28,928.
Hague is the smallest city in Warren County, with a population of 626.
There are 12 cities in Warren County, New York.