Members of the Metropolitan District Dental Society have a primary address in the cities of Ashland, Bellingham, Boxborough, Brookline, Carlisle, Charlestown, City Mills, Dedham, Dover, Dunstable, East Walpole, Foxborough, Framingham, Franklin, Harding, Holliston, Hopkinton, Littleton, Maynard, Medfield, Medway, Millis, Natick, Needham, Newton, Norfolk, Norwood, Plainville, Sharon, Stow, Sherborn, Sudbury, Walpole, Wayland, Wellesley, Weston, Westwood, and Wrentham.