16 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Kent | 1 | 12,907 | 12,900 | 0.18% | 318 | 41 | Town |
| Albion | 2 | 7,954 | 7,461 | 3.51% | 315 | 25 | Town |
| Ridgeway | 3 | 6,479 | 6,577 | 0.08% | 130 | 50 | Town |
| Medina | 4 | 5,862 | 6,011 | -0.42% | 1,777 | 3 | Village |
| Albion | 5 | 5,732 | 5,647 | 0.24% | 1,963 | 3 | Village |
| Shelby | 6 | 4,809 | 4,878 | -0.08% | 104 | 46 | Town |
| Murray | 7 | 4,737 | 4,806 | 0.06% | 153 | 31 | Town |
| Clarendon | 8 | 3,341 | 3,305 | 0.09% | 95 | 35 | Town |
| Gaines | 9 | 3,201 | 3,218 | 0.09% | 93 | 34 | Town |
| Carlton | 10 | 2,828 | 2,823 | 0.32% | 65 | 44 | Town |
| Kendall | 11 | 2,590 | 2,614 | 0.08% | 79 | 33 | Town |
| Yates | 12 | 2,521 | 2,557 | 0.04% | 67 | 37 | Town |
| Albion | 13 | 2,064 | 2,018 | 0.34% | 44 | 47 | Town |
| Barre | 14 | 1,818 | 1,830 | 0.22% | 33 | 55 | Town |
| Holley | 15 | 1,708 | 1,762 | -0.52% | 1,347 | 1 | Village |
| Lyndonville | 16 | 770 | 791 | -0.39% | 752 | 1 | Village |
Kent is the largest city in Orleans County, with a population of 12,907.
Lyndonville is the smallest city in Orleans County, with a population of 770.
There are 16 cities in Orleans County, New York.