Map of Mercer County PA

Mercer County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 110,652. Its county seat is Mercer, and its largest city is Hermitage. The county is part of the Northwest Pennsylvania region of the state.
  • Country: United States
  • State: Pennsylvania
  • Founded: November 7, 1803
  • Named for: Hugh Mercer
  • Seat: Mercer
  • Largest city: Hermitage
  • Congressional district: 16th

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Data from: en.wikipedia.org