Cortlandville is a town in Cortland County, New York, United States.

[2] Cortlandville surrounds the city of Cortland and is at the western border of the county.

The western town line is the border of Tompkins County.

As of the census[6] of 2000, there were 7,919 people, 3,166 households, and 2,168 families residing in the town.

There were 3,431 housing units at an average density of 68.9 per square mile (26.6/km2).

23.0% of all households were made up of individuals, and 10.2% had someone living alone who was 65 years of age or older.