Blackstone is a town in Worcester County, Massachusetts, United States. The population was 9,026 at the2010 census. It is formally a part of the Providence metropolitan area.According to the United States Census Bureau, the town has a total area of 11.2 square miles (29 km2), of which 10.9 square miles (28 km2) is land and 0.3 square miles (0.78 km2), or 2.94%, is water.
This region was originally inhabited by the Nipmuc. Blackstone was first settled in 1662 and was officially incorporated in 1845. Initially, the town was part of Mendon, Massachusetts, before becoming a separate municipality. Prior to 1915, Blackstone contained the area to the west that would break away and becomeMillville, Massachusetts. Blackstone is within the area of the John H. Chaffee Blackstone River Valley National Heritage Corridor of Massachusetts and Rhode Island.