Ashland is a town in Middlesex County, Massachusetts, United States. It is part of the MetroWest region. The population was 16,593 at the 2010 census.
According to the United States Census Bureau, the town has a total area of 12.9 square miles (33 km2), of which, 12.4 square miles (32 km2) of it is land and 0.5 square miles (1.3 km2) of it (3.72%) is water. Ashland is located in eastern Massachusetts, bordered by Framingham on the northeast, Sherborn on the east, Holliston on the south, Hopkinton on the southwest, & Southborough on the northwest.
At the 2010 census, there were 16,593 people, 6,385 households and 4,531 families residing in the town. The population density was 1,338.1 per square mile (515.3/km2). There were 6,609 housing units at an average density of 533.0 per square mile (205.2/km2).