Mercer County IL Plat Map. Online

Mercer County is a county in Illinois. According to the 2020 census, it had a population of 15,699. Its county seat is Aledo. Mercer County is included in the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.
  • Country: United States
  • State: Illinois
  • Founded: January 13, 1825
  • Named after: Hugh Mercer
  • Seat: Aledo
  • Largest city: Aledo
  • Congressional districts: 15th, 17th

Nearby

Data from: en.wikipedia.org