Founded in 1808, Cortland County is one of 62 counties in the state of New York. Historically, Cortland County was formed from Onondaga County. The city of Cortland is the county seat. With FIPS code of 23, Cortland County has a population of 46,311 and area of 502 square miles (1,300 km2).
List of all cities in Cortland County, NY alphabetically
| City/Town | Postal Code | Area Code |
| Blodgett Mills, NY | 13738 | 607 |
| Cincinnatus, NY | 13040 | 607 |
| Cortland, NY | 13045 | 607 |
| Cortlandville, NY | 13045 | 607 |
| Cuyler, NY | 13158 | 607 |
| East Freetown, NY | 13040 | 607 |
| East Homer, NY | 13056 | 607 |
| 13158 | 607 | |
| Freetown, NY | 13803 | 607 |
| Freetown Corners, NY | 13803 | 607 |
| Galatia, NY | 13803 | 607 |
| Harford, NY | 13784 | 607 |
| Homer, NY | 13077 | 607 |
| Hunts Corners, NY | 13803 | 607 |
| Lapeer, NY | 13803 | 607 |
| Little York, NY | 13087 | 607 |
| Marathon, NY | 13803 | 607 |
| McGraw, NY | 13101 | 607 |
| Messengerville, NY | 13803 | 607 |
| Munsons Corners, NY | 13045 | 607 |
| Preble, NY | 13141 | 315 |
| Richford, NY | 13784 | 607 |
| Scott, NY | 13077 | 607 |
| Taylor, NY | 13040 | 607 |
| Texas Valley, NY | 13803 | 607 |
| Truxton, NY | 13056 | 607 |
| 13158 | 607 | |
| Virgil, NY | 13045 | 607 |
| Willet, NY | 13863 | 607 |