Dalton is a town in Berkshire County, Massachusetts, United States. Dalton is the transition town between the urban and rural pieces of Berkshire County, Massachusetts. It is part of the Pittsfield, Massachusetts Metropolitan Statistical Area. According to the United States Census Bureau, the town has a total area of 21.9 square miles (57 Square Kilometer), of which 21.8 square miles (56 Square Kilometer) is land and 0.04 square miles (0.10 Square Kilometer) (0.18%) is water. Dalton is bordered by Cheshire to the northwest and north, Windsor to the northeast, Hinsdale to the east, Washington to the south, and Pittsfield and Lanesborough to the west. The town center is five miles northeast of downtown Pittsfield, 45 miles northwest of Springfield, and 140 miles west of Boston.