Westville is a town in Franklin County, New York, United States. As of the 2010 census, the town had a population of 1,819. Westville is on the northern border of the county, northwest of Malone.

Franklin County is a county on the northern border of the U.S. state of New York. To the north across the Canada–United States border are the Canadian provinces of Quebec and Ontario, from east to west. As of the 2020 census, the county population was 47,555. Its county seat is Malone. The county is named in honor of United States Founding Father Benjamin Franklin. The county is part of the North Country region of the state.