| Zip Code | City | Population ↓ |
|---|---|---|
| 14895 | Wellsville | 9,168 |
| 14727 | Cuba | 4,939 |
| 14802 | Alfred | 4,563 |
| 14770 | Portville | 2,888 |
| 14735 | Fillmore | 2,725 |
| 14739 | Friendship | 2,627 |
| 14715 | Bolivar | 2,579 |
| 14744 | Houghton | 2,250 |
| 14813 | Belmont | 2,213 |
| 14806 | Andover | 2,149 |
| 14711 | Belfast | 1,943 |
| 14803 | Alfred Station | 1,546 |
| 14880 | Scio | 1,520 |
| 14804 | Almond | 1,507 |
| 14709 | Angelica | 1,240 |
| 14822 | Canaseraga | 850 |
| 14897 | Whitesville | 716 |
| 14777 | Rushford | 613 |
| 14717 | Caneadea | 564 |
| 14714 | Black Creek | 544 |
| 14754 | Little Genesee | 534 |
| 14060 | Farmersville Station | 356 |
| 14884 | Swain | 303 |
| 14774 | Richburg | 290 |
| 14721 | Ceres | 175 |
| 14708 | Alma | 155 |
| 14707 | Allentown | 93 |
| 14029 | Centerville | 31 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 28 ZCTAs in Allegany County, New York (US Census).