Groton is a town in Tompkins County, New York, United States.

Many of the early residents from New England elected to change the name to "Groton."

In 1888, the community of Groton separated from the town by incorporating as a village.

According to the United States Census Bureau, the town has a total area of 128.4 km2 (49.6 sq mi).

Groton is in the Finger Lakes region of central New York State.

New York State Route 34B is an east–west highway by the south town line.

As of the census[4] of 2000, there were 5,794 people, 2,168 households, and 1,543 families residing in the town.

23.1% of all households were made up of individuals, and 9.7% had someone living alone who was 65 years of age or older.

As of the census of 2020,[5] there were 5,746 people, 2,372 households, and an unknown number of families residing in the town.