27 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 14760 | Olean | 17,474 |
| 14779 | Salamanca | 6,738 |
| 14706 | Allegany | 5,939 |
| 14070 | Gowanda | 5,001 |
| 14772 | Randolph | 4,394 |
| 14737 | Franklinville | 4,376 |
| 14042 | Delevan | 3,967 |
| 14719 | Cattaraugus | 3,448 |
| 14755 | Little Valley | 2,919 |
| 14726 | Conewango Valley | 2,494 |
| 14138 | South Dayton | 2,046 |
| 14743 | Hinsdale | 2,037 |
| 14101 | Machias | 1,997 |
| 14741 | Great Valley | 1,805 |
| 14171 | West Valley | 1,611 |
| 14065 | Freedom | 1,597 |
| 14778 | Saint Bonaventure | 1,539 |
| 14129 | Perrysburg | 1,236 |
| 14731 | Ellicottville | 1,226 |
| 14753 | Limestone | 1,060 |
| 14729 | East Otto | 756 |
| 14748 | Kill Buck | 446 |
| 14041 | Dayton | 308 |
| 14173 | Yorkshire | 266 |
| 14788 | Westons Mills | 107 |
| 14783 | Steamburg | 80 |
| 14168 | Versailles | 50 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 27 ZCTAs in Cattaraugus County, New York (US Census).