34 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 13856 | Walton | 5,881 |
| 13753 | Delhi | 5,696 |
| 13838 | Sidney | 4,251 |
| 12776 | Roscoe | 2,073 |
| 13783 | Hancock | 2,035 |
| 13775 | Franklin | 1,752 |
| 12455 | Margaretville | 1,689 |
| 13839 | Sidney Center | 1,360 |
| 13757 | East Meredith | 1,130 |
| 13731 | Andes | 1,038 |
| 13788 | Hobart | 997 |
| 12434 | Grand Gorge | 944 |
| 13782 | Hamden | 936 |
| 13750 | Davenport | 896 |
| 13752 | Delancey | 858 |
| 12474 | Roxbury | 857 |
| 13739 | Bloomville | 833 |
| 13756 | East Branch | 697 |
| 13755 | Downsville | 652 |
| 13740 | Bovina Center | 626 |
| 13842 | South Kortright | 582 |
| 13786 | Harpersfield | 430 |
| 12760 | Long Eddy | 367 |
| 13774 | Fishs Eddy | 323 |
| 13846 | Treadwell | 308 |
| 13751 | Davenport Center | 297 |
| 12421 | Denver | 261 |
| 13860 | West Davenport | 257 |
| 13804 | Masonville | 244 |
| 12438 | Halcottsville | 190 |
| 13806 | Meridale | 143 |
| 12441 | Highmount | 106 |
| 12459 | New Kingston | 30 |
| 13847 | Trout Creek | 18 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 34 ZCTAs in Delaware County, New York (US Census).