Medfield is a town in Norfolk County, Massachusetts, United States. The population was 12,024 according to the 2010 Census. Medfield is an affluent community about 17 miles southwest of Boston, Massachusetts, which is a 45 minute drive to Boston's financial district. Attractions include the Lowell Mason house, Hinckley Pond and the Peak House.
According to the United States Census Bureau, the town has a total area of 14.6 square miles (37.8 kmē), of which 14.5 square miles (37.6 kmē) is land and 0.1 square mile (0.2 kmē) (0.62%) is water. The Charles River borders almost one-third of Medfield. Medfield is surrounded by the towns Dover, Norfolk, Walpole, Millis, and Sherborn. The Charles River marks the Millis border.
Medfield has a Public School system, Medfield Public Schools, that continually ranks among the top ten school systems in Massachusetts by the Massachusetts Comprehensive Assessment System (MCAS). In 2013, Medfield High School Seniors scored an average of 591 on the SAT Critical Reading Section, 618 on the SAT Math Section, and 598 on the SAT Writing Section.