Massachusetts Counties by Population

The most populated counties in Massachusetts are Middlesex County with 1,623,952, Worcester County at 866,866, Essex County with 810,089, Suffolk County at 768,425, and Norfolk County with 727,473. You can get the most current Census population data for all 14 Massachusetts counties, sorted from the most populous counties in Massachusetts to the least, according to the 2023 Population Estimates Program.

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