Warrensburg is a town in Warren County, New York, United States. It is centrally located in the county, west of Lake George. It is part of the Glens Falls metropolitan area. The town population was 3,959 at the 2020 census. While the county is named after General Joseph Warren, the town is named after James Warren, a prominent early settler. U.S. Route 9 passes through the town, which is immediately west of Interstate 87.