About the town » Theresa, Jefferson County, New York, United States

Theresa is a town in Jefferson County, New York, United States. The population was 2,905 at the 2010 census. The town is named after the daughter of an original landowner, Theresa Le Ray.The town of Theresa contains a village also named Theresa. The town and village are in the northeast part of the county, northeast of Watertown.