Baldwinsville is a village in Onondaga County, New York, United States. As of the 2020 census, the population was 7,898. It is part of the Syracuse Metropolitan Statistical Area. It is often referred to by those in the area as B’ville. Baldwinsville is located in the towns of Lysander and Van Buren. Baldwinsville mailing addresses also include a small northwestern section of the town of Clay.