Population Trends and Projections

The 2015 population estimate for Chester County is 515,939. From 1930 to 1980, the County increased by approximately 190,000 people. From 1980 to 2010, it grew by just over 180,000. During that time the share of population living in boroughs and Coatesville City shifted from almost 50% to under 20%. Currently, the county population is about the same as Atlanta, GA, Kansas City, MO, and Sacramento, CA.

By 2045, the population in Chester County is projected to increase by over 146,000 for a total population of 662,000. The municipalities projected to grow by more than 4,000 new residents are largely clustered around Downingtown Borough. Other projected growth areas are the Great Valley, the Route 1 corridor, and communities bordering Montgomery County.

Ethnicity and Hispanic Origin

For most of the last three centuries, Chester County residents were largely of European and African heritage. However, over the last three decades, the Hispanic or Latino population has risen to over 7%, roughly matching the Black/African American (alone) population. Meanwhile the Asian (alone) population has increased to over 5%. The White (alone) population number continues to increase but the share has dropped modestly.

Aging Population

Over the last four decades, the age distribution in Chester County has changed. The share of children and retirees has remained relatively stable, while the working age adult population has shifted with an increase among those nearing retirement. Although there is a common perception that young adult “Millennials” are leaving the county, census data indicates that Chester County has a similar age distribution (24.3%) to the state (25.9%) and nation as a whole. However, Philadelphia has a higher share of young adults, with a regional young adult share of 33.5%.

Millennials in Chester County

During the summer of 2016, Jake Michael of the Planning Commission staff gave a series of presentations about the how local planning is adapting to meet the needs of Millennial Generation. How Chester County’s communities will adapt to the changing housing and employment needs of Millennials has become a significant planning issue, since this generation now comprises roughly a quarter of the population. View Presentation