What county is Waltham MA in
Waltham city is located Middlesex County.
Waltham is a city in Middlesex County, Massachusetts, United States. At the 2010 Census it had a population of 60,632 habitantes.
Su estimated population, in mid-2019, is 62,495 inhabitants. Geography Waltham is located at the coordinates(42°23′ -71°15′). = = Geography = = According to the United States Census Bureau, the town has a total area of 35.6 km2, of which 33.01 km2 is land and 2.63 km2 is water.

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