DeWitt is a town in Onondaga County, New York, United States. As of the 2020 census, the population was 26,074. The town is named after major Moses DeWitt, a judge and soldier. An eastern suburb of Syracuse, DeWitt also is the site of most of the campus and all of the academic buildings of Le Moyne College. Subject property is located just south of Carrier Circle on Highly Trafficked Thompson Road. Minutes from Routes 690, 481 and the New York State Thruway access points.