2016 County Population Estimates: Decadal Growth Slowed by County Losses

By: Pennsylvania State Data Center

Published: March 2017

HARRISBURG – Pennsylvania’s southeast and southcentral counties continue to grow into the second half of the decade while the rest of the state experiences population losses. Despite ranking 6th in the nation for total population, percent decreases at the county level have resulted in most of Pennsylvania’s counties ranking in the bottom 50% in terms of growth.

Population Growth in Pennsylvania

Philadelphia County, the Commonwealth’s most populous county, reported the largest growth numerically at 41,866 persons since 2010, although Montgomery (3,362) outpaced Philadelphia’s growth (2,908) from 2015 to 2016. Montgomery (21,841), Lancaster (19,052), Chester (17,166), and Lehigh (13,521) followed the Birthplace of America as the highest grossing counties numerically since 2010.

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