Founded in 1789, Ontario County is one of 62 counties in the state of New York. Historically, Ontario County was formed from Land acquired in the Phelps and Gorham Purchase. The city of Canandaigua is the county seat. With FIPS code of 69, Ontario County has a population of 112,508 and area of 662 square miles (1,715 km2).
List of all cities in Ontario County, NY alphabetically
| City/Town | Postal Code | Area Code |
| Bloomfield, NY | 14469 | 585 |
| Canandaigua, NY | 14424 | 585 |
| 14425 | 585 | |
| Clifton Springs, NY | 14432 | 315 |
| East Bloomfield, NY | 14443 | 585 |
| 14469 | 585 | |
| Farmington, NY | 14425 | 585 |
| Fishers, NY | 14453 | 585 |
| Geneva, NY | 14456 | 315 |
| Gorham, NY | 14461 | 585 |
| Hall, NY | 14463 | 585 |
| Holcomb, NY | 14469 | 585 |
| Honeoye, NY | 14471 | 585 |
| Ionia, NY | 14475 | 585 |
| Manchester, NY | 14504 | 585 |
| Naples, NY | 14512 | 585 |
| Oaks Corners, NY | 14518 | 315 |
| Phelps, NY | 14532 | 315 |
| Port Gibson, NY | 14537 | 315 |
| Seneca Castle, NY | 14547 | 315 |
| Shortsville, NY | 14548 | 585 |
| Stanley, NY | 14561 | 585 |
| Victor, NY | 14564 | 585 |
| West Bloomfield, NY | 14585 | 585 |
| West Junius, NY | 14532 | 315 |