Sutton is a town in Worcester County, Massachusetts, United States. The population was 8,963 at the 2010 census.
According to the United States Census Bureau, the town has a total area of 33.9 square miles (88 km2), of which 32.4 square miles (84 km2) is land and 1.5 square miles (3.9 km2), or 4.57%, is water. The town contains five villages, known as Sutton Center, Manchaug, Wilkinsonville, West Sutton, and South Sutton. Located in the Blackstone Valley, Sutton shares its borders with the towns of Millbury, Grafton, Northbridge, Douglas, Uxbridge, and Oxford. Purgatory Chasm State Reservation is located in the eastern part of town.
As of the 2010 U.S. Census there were 8,963 people residing in Sutton. As of the census of 2000, there were 8,250 people, 2,811 households, and 2,282 families residing in the town. The population density was 254.8 inhabitants per square mile (98.4 /km2). There were 2,950 housing units at an average density of 91.1 per square mile (35.2 /km2).