| Zip Code | City | Population ↓ |
|---|---|---|
| 13148 | Seneca Falls | 10,854 |
| 13165 | Waterloo | 9,511 |
| 14541 | Romulus | 3,660 |
| 14521 | Ovid | 3,366 |
| 14847 | Interlaken | 2,409 |
| 14860 | Lodi | 1,121 |
| 13065 | Fayette | 222 |
| 14588 | Willard | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Seneca County, New York (US Census).