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The Boston Globe

Metro

Boom in immigration fuels state population rise

Middlesex, Suffolk counties add most

Driven by a boom in immigration, the Boston area grew by about 55,000 residents in a recent two-year period, according to new county population estimates by the US Census Bureau.

The population growth in Cambridge’s Middlesex County and Boston’s Suffolk County together accounted for about half the state’s overall growth of about 100,000 new residents between April 2010 and July 2012, the census figures show.

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