| population | |
| City of Cortland | 19204 |
| Town of Cincinnatus | 1024 |
| Town of Cortlandville | 8328 |
| Town of Cuyler | 945 |
| Town of Freetown | 771 |
| Town of Harford | 940 |
| population | |
| Town of Homer | 6337 |
| Town of Lapeer | 749 |
| Town of Marathon | 1909 |
| Town of Preble | 1344 |
| Town of Scott | 1152 |
| Town of Solon | 1066 |
| population | |
| Town of Taylor | 502 |
| Town of Truxton | 1110 |
| Town of Virgil | 2400 |
| Town of Willet | 1010 |
 | Cortland County Chase Field | ~ 11.84 km |
| Ithaca Tompkins Regional Airport | ~ 33.84 km |
| Greater Binghamton/Edwin A Link field | ~ 43.59 km |
| Lt Warren Eaton Airport | ~ 44.83 km |
| Syracuse Hancock International Airport | ~ 57.47 km |
| Sidney Municipal Airport | ~ 62.76 km |
| Elmira Corning Regional Airport | ~ 83.02 km |
| Griffiss International Airport | ~ 89.23 km |
| Cooperstown-Westville Airport | ~ 96.63 km |
