Marshall County Illinois Township Map

Marshall County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 11,742. Its county seat is Lacon. Marshall County is part of the Peoria, IL Metropolitan Statistical Area.
  • Country: United States
  • State: Illinois
  • Founded: January 19, 1839
  • Named for: John Marshall
  • Seat: Lacon
  • Largest city: Henry
  • Congressional district: 16th

Nearby

Data from: en.wikipedia.org