There are 11 zip codes in Cortland County, New York. The most populated is 13045, located in Cortland. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
1304528,157Cortland
130776,646Homer
138034,278Marathon
130402,620Cincinnatus
131012,410Mc Graw
131581,352Truxton
13141655Preble
13863473Willet
13784294Harford
13087161Little York
1373844Blodgett Mills
showing: 11 rows

Zip Codes in Cortland County, New York by Population (2024)