Skip to main content
Population Review

What is the population of Mercer County, PA?

Mercer County in Pennsylvania has a population of 109,852, per Census ACS 5-Year estimates. The median household income is $60,614 and the median age is 45.2.

Context

Counties are the primary administrative subdivisions of states and a stable unit for tracking population. Mercer County's population reflects everyone within county lines, including residents of incorporated cities and unincorporated areas.

Explore Further

Related Questions

Frequently Asked Questions

Mercer County in Pennsylvania has a population of 109,852, per Census ACS 5-Year estimates. The median household income is $60,614 and the median age is 45.2.