Baldwinville is an unincorporated village and census-designated place (CDP) in the town of Templeton in Worcester County, Massachusetts, United States. The population was 2,028 at the 2010 census. The name also refers to the local post office or railroad station. Some people, perhaps confusing it with the place in New York, erroneously call it "Baldwinsville".
Baldwinville is located at 42°36′37″N 72°4′31″W / 42.61028°N 72.07528°W / 42.61028; -72.07528 (42.610167, -72.075239).
According to the United States Census Bureau, the CDP has a total area of 6.5 km² (2.5 mi²). 6.4 km² (2.5 mi²) of it is land and 0.1 km² (0.04 mi²) of it (0.80%) is water.