There are 14 cities in Seneca County, New York.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Geneva | 1 | New York | 12,307 | 12,699 | -0.79% | 2,921 | 4.21 |
| Seneca Falls | 2 | New York | 7,285 | 6,276 | 2.75% | 1,554 | 4.69 |
| Waterloo | 3 | New York | 4,678 | 4,856 | -0.93% | 2,169 | 2.16 |
| Lyons | 4 | New York | 3,798 | 3,313 | 2.76% | 823 | 4.61 |
| Clyde | 5 | New York | 2,137 | 2,167 | -0.33% | 972 | 2.20 |
| Phelps | 6 | New York | 1,868 | 1,870 | 0% | 1,615 | 1.16 |
| Trumansburg | 7 | New York | 1,655 | 1,761 | -1.55% | 1,193 | 1.39 |
| Jacksonville | 8 | New York | 898 | 438 | 14.69% | 249 | 3.61 |
| Interlaken | 9 | New York | 624 | 632 | -0.32% | 2,033 | 0.31 |
| Ovid | 10 | New York | 538 | 548 | -0.37% | 1,352 | 0.40 |
| Romulus | 11 | New York | 335 | 431 | -6.69% | 550 | 0.61 |
| Hall | 12 | New York | 290 | 314 | -2.03% | 283 | 1.02 |
| Lodi | 13 | New York | 287 | 289 | 0% | 521 | 0.55 |
| Savannah | 14 | New York | 252 | 550 | -22.7% | 214 | 1.18 |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Geneva is the largest city in Seneca County.
Savannah is the smallest city in Seneca County.
There are 14 cities in Seneca County, New York.