| Marshall County Illinois Cities/Towns - Henry, Hopewell, La Rose, Lacon (County Seat), Saratoga Center, Sparland, Toluca, Varna, Washburn, Wenona |
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Your Ad Here Marshall County is a county located in the U.S. state of Illinois. As of 2000, the population is 13,180. Its county seat is Lacon. History Marshall County was formed in 1839. It was named in honor of John Marshall, Chief Justice of the United States Supreme Court, who died in 1835. ![]() |