Acton is a town in Middlesex County, Massachusetts about twenty-four miles west-northwest of Boston along Massachusetts Route 2 past Concord. As of the 2000 census, the town had a total population of 20,331. It is bordered by Westford and Carlisle to the north, Concord to the east, Stow and Maynard to the south, and Boxborough and Littleton to the west. Source: [wikipedia: acton, massachusetts]