Population estimates by age group by county in Massachusetts

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Number – Estimated number of individuals living in each county.

Data Source:

From the U.S. Census Bureau, Annual Estimates of the Resident Population for Selected Age Groups


The estimates are based on the 2010 Census and reflect changes to the April 1, 2010 population due to the Count Question Resolution program and geographic program revisions. For population estimates methodology statements, see http://www.census.gov/popest/methodology/index.html.

Updated March 2019 with data from June 2018