17 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 13021 | Auburn | 37,247 |
| 13166 | Weedsport | 5,622 |
| 13118 | Moravia | 5,591 |
| 13140 | Port Byron | 3,959 |
| 13033 | Cato | 3,732 |
| 13092 | Locke | 2,689 |
| 13160 | Union Springs | 2,444 |
| 13156 | Sterling | 2,156 |
| 13034 | Cayuga | 2,029 |
| 13026 | Aurora | 1,619 |
| 13111 | Martville | 1,463 |
| 13147 | Scipio Center | 1,236 |
| 13024 | Auburn | 1,230 |
| 13081 | King Ferry | 1,122 |
| 13071 | Genoa | 796 |
| 13117 | Montezuma | 132 |
| 13113 | Meridian | 56 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 17 ZCTAs in Cayuga County, New York (US Census).