37 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Catskill town | 1 | 11,174 | 11,270 | -0.47% | 185 | 60.44 | Town |
| Greenville | 2 | 10,202 | 9,155 | 2.06% | 3,901 | 2.62 | CDP |
| Coxsackie town | 3 | 7,482 | 8,216 | -0.68% | 203 | 36.87 | Town |
| Cairo town | 4 | 6,612 | 6,660 | -0.42% | 111 | 59.83 | Town |
| Greenville town | 5 | 4,603 | 4,677 | -0.43% | 153 | 30.04 | Town |
| Athens town | 6 | 3,918 | 3,920 | -0.31% | 149 | 26.25 | Town |
| Catskill | 7 | 3,741 | 3,796 | -0.29% | 1,641 | 2.28 | Village |
| Greenville town | 8 | 3,677 | 3,759 | -0.81% | 95 | 38.79 | Town |
| New Baltimore town | 9 | 3,112 | 3,213 | -1.02% | 75 | 41.42 | Town |
| Hunter town | 10 | 2,980 | 3,045 | -0.73% | 33 | 89.89 | Town |
| Coxsackie | 11 | 2,693 | 2,753 | -0.44% | 1,241 | 2.17 | Village |
| Durham town | 12 | 2,576 | 2,630 | -0.81% | 52 | 49.31 | Town |
| Sleepy Hollow Lake | 13 | 2,045 | 1,276 | 7.12% | 1,066 | 1.92 | CDP |
| Windham town | 14 | 1,715 | 1,714 | -0.35% | 38 | 45.20 | Town |
| Athens | 15 | 1,588 | 1,575 | 0.19% | 464 | 3.42 | Village |
| Jefferson Heights | 16 | 1,520 | 1,005 | 1.88% | 1,031 | 1.48 | CDP |
| Ashland town | 17 | 1,429 | 1,503 | -0.83% | 101 | 14.16 | Town |
| Cairo | 18 | 1,341 | 1,356 | -0.3% | 317 | 4.23 | CDP |
| Palenville | 19 | 897 | 1,141 | -0.99% | 265 | 3.38 | CDP |
| East Durham | 20 | 866 | 634 | 7.18% | 252 | 3.44 | CDP |
| Jewett town | 21 | 854 | 877 | -0.93% | 17 | 50.32 | Town |
| Round Top | 22 | 829 | 565 | 7.11% | 95 | 8.75 | CDP |
| Greenville | 23 | 761 | 691 | 0.66% | 196 | 3.88 | CDP |
| Prattsville town | 24 | 752 | 762 | -0.66% | 36 | 20.96 | Town |
| Lexington town | 25 | 751 | 767 | -0.79% | 9 | 80.21 | Town |
| South Cairo | 26 | 688 | 612 | 7.17% | 298 | 2.31 | CDP |
| Ashland town | 27 | 647 | 667 | -1.07% | 26 | 24.63 | Town |
| New Baltimore | 28 | 582 | 545 | 6.99% | 331 | 1.76 | CDP |
| Tannersville | 29 | 569 | 576 | -0.18% | 509 | 1.12 | Village |
| Hunter | 30 | 411 | 410 | 0% | 222 | 1.85 | Village |
| Haines Falls | 31 | 352 | 120 | 6.99% | 430 | 0.82 | CDP |
| Leeds | 32 | 292 | 398 | -2.01% | 316 | 0.92 | CDP |
| Windham | 33 | 287 | 329 | -1.71% | 125 | 2.30 | CDP |
| Halcott town | 34 | 246 | 252 | -0.81% | 11 | 23.04 | Town |
| Cementon | 35 | 244 | 233 | 7.02% | 742 | 0.33 | CDP |
| West Kill | 36 | 68 | 41 | 7.94% | 55 | 1.23 | CDP |
| Prattsville | 37 | 34 | 117 | -38.18% | 8 | 4.04 | CDP |
Catskill town is the largest city in Greene County, with a population of 11,174.
Prattsville is the smallest city in Greene County.
There are 37 cities in Greene County, New York.