12 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Queensbury | 1 | 28,802 | 29,113 | -0.51% | 462 | 62 | Town |
| Glens Falls | 2 | 14,290 | 14,785 | -0.57% | 3,711 | 4 | City |
| Warrensburg | 3 | 3,968 | 3,958 | 0.1% | 63 | 63 | Town |
| Lake George | 4 | 3,495 | 3,495 | 0.03% | 117 | 30 | Town |
| Lake Luzerne | 5 | 3,102 | 3,074 | 0.19% | 59 | 53 | Town |
| Johnsburg | 6 | 2,138 | 2,140 | -0.05% | 10 | 204 | Town |
| Bolton | 7 | 2,010 | 2,007 | 0.05% | 32 | 64 | Town |
| Horicon | 8 | 1,467 | 1,466 | 0% | 22 | 66 | Town |
| Thurman | 9 | 1,098 | 1,094 | 0.18% | 12 | 91 | Town |
| Lake George | 10 | 1,006 | 1,008 | 0% | 1,717 | 1 | Village |
| Stony Creek | 11 | 761 | 760 | 0% | 9 | 82 | Town |
| Hague | 12 | 635 | 635 | 0% | 10 | 64 | Town |
Queensbury is the largest city in Warren County, with a population of 28,802.
Hague is the smallest city in Warren County, with a population of 635.
There are 12 cities in Warren County, New York.