Dover is a town in Norfolk County, Massachusetts, United States. The population was 5,589 at the 2010 census. Located about 15 miles (24 km) southwest of downtown Boston, Dover is a residential town nestled on the south banks of the Charles River. Almost all of the residential zoning requires 1-acre (4,000 m2) or larger. As recently as the early 1960s, 75% of its annual town budget was allocated to snow removal, as only a mile and a half of the town's roads are state highway. The nickname of Dover is the Town of Friendship.
According to the United States Census Bureau, the town has a total area of 15.4 square miles (39.9 km2), of which, 15.3 square miles (39.7 km2) of it is land and 0.1 square miles (0.2 km2) of it (0.52%) is water. It is bordered by the towns of Natick, Wellesley, Needham, Dedham, Westwood, Sherborn, Walpole, and Medfield.
As of the census of 2000, there were 5,558 people, 1,849 households, and 1,567 families residing in the town. The population density was 362.6 people per square mile (140.0/km2). There were 1,884 housing units at an average density of 122.9 per square mile (47.5/km2).