27 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Geneseo | 1 | 10,468 | 10,208 | 0.28% | 238 | 44 | Town |
| Geneseo | 2 | 7,779 | 7,607 | 0.37% | 2,730 | 3 | Village |
| Livonia | 3 | 7,593 | 7,502 | 0.52% | 198 | 38 | Town |
| Avon | 4 | 7,079 | 6,913 | 0.31% | 172 | 41 | Town |
| North Dansville | 5 | 5,237 | 5,306 | 0.15% | 531 | 10 | Town |
| Mount Morris | 6 | 4,500 | 4,412 | 1.19% | 90 | 50 | Town |
| Dansville | 7 | 4,308 | 4,418 | -0.42% | 1,652 | 3 | Village |
| Lima | 8 | 4,169 | 4,142 | 0.7% | 131 | 32 | Town |
| Caledonia | 9 | 4,135 | 4,151 | 0.24% | 94 | 44 | Town |
| Avon | 10 | 3,474 | 3,372 | 0.49% | 1,104 | 3 | Village |
| York | 11 | 3,179 | 3,183 | 0.28% | 65 | 49 | Town |
| Mount Morris | 12 | 2,824 | 2,893 | -0.39% | 1,379 | 2 | Village |
| Nunda | 13 | 2,686 | 2,683 | 0.37% | 72 | 37 | Town |
| Conesus | 14 | 2,364 | 2,311 | 1.03% | 72 | 33 | Town |
| Springwater | 15 | 2,272 | 2,289 | 0.22% | 43 | 53 | Town |
| Groveland | 16 | 2,241 | 2,189 | 2.38% | 57 | 39 | Town |
| Lima | 17 | 2,092 | 2,125 | -0.24% | 1,555 | 1 | Village |
| Leicester | 18 | 2,072 | 2,082 | 0.39% | 61 | 34 | Town |
| Caledonia | 19 | 2,070 | 2,118 | -0.38% | 987 | 2 | Village |
| Dansville | 20 | 1,825 | 1,829 | 0.39% | 38 | 48 | Town |
| Sparta | 21 | 1,589 | 1,587 | 0.7% | 57 | 28 | Town |
| Livonia | 22 | 1,453 | 1,495 | -0.48% | 1,434 | 1 | Village |
| Nunda | 23 | 1,144 | 1,167 | -0.35% | 1,172 | 1 | Village |
| West Sparta | 24 | 1,142 | 1,153 | 0.26% | 34 | 33 | Town |
| Portage | 25 | 746 | 761 | 0% | 28 | 26 | Town |
| Ossian | 26 | 715 | 724 | 0.14% | 18 | 40 | Town |
| Leicester | 27 | 455 | 470 | -0.44% | 1,260 | 0 | Village |
Geneseo is the largest city in Livingston County, with a population of 10,468.
Leicester is the smallest city in Livingston County, with a population of 455.
There are 27 cities in Livingston County, New York.