Chelmsford is a town in Middlesex County, Massachusetts in the United States. It is within the traditional homeland of the Pennacook, whose descendants are members of the Abenaki First Nation. As of the 2010 United States Census, the town's population was 33,802. Only 48.4% are male and the median age of residents in Chelmsford is 39.2 years old. It is located 24 miles northwest of Boston and, bordering on the city of Lowell, is part of the Greater... Show more

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