Lehigh Valley Has the Fastest-Growing Young Population in Pennsylvania, Ranging from 18–34-Year-olds

With Pennsylvania’s population decreasing in many areas over the last decade, Lehigh Valley’s population grew more than any other region – primarily among millennials and Gen Zers.

Among the 67 counties in Pennsylvania, Lehigh County led in growth among young adults at 12%, and Northampton County came fourth at 8.8%, according to an analysis by