Warren County, Illinois
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Warren County is a county in the U.S. state of Illinois. According to the 2020 census, it had a population of 16,835. Its county seat is Monmouth.
Warren County Courthouse in Monmouth
Henderson County, Illinois
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Henderson County is a county located in the U.S. state of Illinois. According to the 2020 United States census, it has a population of 6,387. Its county seat is Oquawka. Henderson County is part of th
Warren County, Illinois
…Warren County was organized in 1825 out of Pike County which consisted of all portions of the state north and west of the Illinois River before 1825. Henderson County was formed in 1841 from the western area of Warren County. Warren County was named for Dr. Joseph Warren, killed at the Battle of Bunker Hill in 1775…
Henderson County Courthouse, Oquawka