8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 13148 | Seneca Falls | 10,798 |
| 13165 | Waterloo | 9,429 |
| 14541 | Romulus | 3,523 |
| 14521 | Ovid | 3,282 |
| 14847 | Interlaken | 2,385 |
| 14860 | Lodi | 1,079 |
| 13065 | Fayette | 131 |
| 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).