24 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Attica | 1 | 6,463 | 6,502 | 2.44% | 181 | 36 | Town |
| Warsaw | 2 | 5,219 | 5,291 | -0.38% | 147 | 35 | Town |
| Perry | 3 | 4,771 | 4,861 | -0.25% | 131 | 36 | Town |
| Arcade | 4 | 4,172 | 4,179 | -0.29% | 89 | 47 | Town |
| Warsaw | 5 | 3,601 | 3,640 | -0.17% | 867 | 4 | Village |
| Perry | 6 | 3,558 | 3,638 | -0.36% | 1,493 | 2 | Village |
| Bennington | 7 | 3,185 | 3,227 | -0.25% | 58 | 55 | Town |
| Castile | 8 | 2,682 | 2,722 | -0.26% | 72 | 37 | Town |
| Attica | 9 | 2,423 | 2,480 | -0.37% | 1,389 | 2 | Village |
| Sheldon | 10 | 2,320 | 2,359 | -0.34% | 49 | 47 | Town |
| Gainesville | 11 | 1,973 | 2,005 | -0.3% | 55 | 36 | Town |
| Java | 12 | 1,934 | 1,963 | -0.26% | 41 | 47 | Town |
| Arcade | 13 | 1,905 | 1,949 | -0.37% | 739 | 3 | Village |
| Middlebury | 14 | 1,306 | 1,334 | -0.38% | 37 | 36 | Town |
| Orangeville | 15 | 1,260 | 1,279 | -0.32% | 35 | 36 | Town |
| Covington | 16 | 1,234 | 1,251 | -0.24% | 47 | 26 | Town |
| Eagle | 17 | 1,084 | 1,101 | -0.28% | 30 | 36 | Town |
| Castile | 18 | 980 | 998 | -0.31% | 718 | 1 | Village |
| Pike | 19 | 962 | 976 | -0.21% | 31 | 31 | Town |
| Wethersfield | 20 | 739 | 750 | -0.27% | 21 | 36 | Town |
| Silver Springs | 21 | 713 | 724 | -0.28% | 734 | 1 | Village |
| Genesee Falls | 22 | 400 | 401 | 0.25% | 26 | 15 | Town |
| Wyoming | 23 | 372 | 383 | -0.53% | 535 | 1 | Village |
| Gainesville | 24 | 219 | 225 | -0.45% | 257 | 1 | Village |
Attica is the largest city in Wyoming County, with a population of 6,463.
Gainesville is the smallest city in Wyoming County, with a population of 219.
There are 24 cities in Wyoming County, New York.