Founded in 1806, Allegany County is one of 62 counties in the state of New York. Historically, Allegany County was formed from Genesee County. The city of Belmont is the county seat. With FIPS code of 3, Allegany County has a population of 46,106 and area of 1,034 square miles (2,678 km2).
List of all cities in Allegany County, NY alphabetically
| City/Town | Postal Code | Area Code |
| Alfred, NY | 14802 | 607 |
| Alfred Station, NY | 14803 | 607 |
| Allentown, NY | 14707 | 585 |
| Alma, NY | 14708 | 585 |
| 14715 | 585 | |
| Almond, NY | 14804 | 607 |
| Andover, NY | 14806 | 607 |
| Angelica, NY | 14709 | 585 |
| Belfast, NY | 14711 | 585 |
| Belmont, NY | 14813 | 585 |
| Black Creek, NY | 14714 | 585 |
| Bolivar, NY | 14715 | 585 |
| Canaseraga, NY | 14822 | 607 |
| Caneadea, NY | 14717 | 585 |
| Centerville, NY | 14029 | 585 |
| Ceres, NY | 14721 | 585 |
| Cuba, NY | 14727 | 585 |
| Fillmore, NY | 14735 | 585 |
| Friendship, NY | 14739 | 585 |
| Houghton, NY | 14744 | 585 |
| Hume, NY | 14745 | 585 |
| Little Genesee, NY | 14754 | 585 |
| Richburg, NY | 14774 | 585 |
| Rushford, NY | 14777 | 585 |
| Scio, NY | 14880 | 585 |
| South Bolivar, NY | 14715 | 585 |
| Swain, NY | 14884 | 607 |
| Wellsville, NY | 14895 | 585 |
| West Clarksville, NY | 14786 | 585 |
| Whitesville, NY | 14897 | 607 |