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Waltham, Massachusetts Map and Directory


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Middlesex County, Massachusetts locator map According to the United States Census Bureau, Waltham is a City that is located in Middlesex County, Massachusetts at 42.38 degrees North and 71.24 degrees West.  The city's time zone is America/New York, and the city's primary telephone area code is 339.  The land area of Waltham is about 12.73 square miles, whereas the water area of the city is about 1.02 square miles.  Middlesex County's land area is about 818 square miles, so the city occupies about 1.6 percent of the county's total land area.

The Census Bureau estimates that Waltham had about 62,442 residents in 2017, which is approximately 4,905 people per square mile of land area. 

According to recent American Community Survey data, Waltham had 23,873 total estimated households and the median household income was about $73,162 per year. 

The Massachusetts counties map at upper right shows Middlesex County, highlighted in red.  Use the menu below to display interactive maps of Waltham, either in a frame on this page or in full-screen mode. 

Use the menu below to display categorized Waltham directories. 

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* Parenthesized numbers indicate economic activity levels.

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