Welcome to Hamilton County
Steeped in history, Hamilton County, Illinois is located in the region of Southern Illinois
known locally as Little Egypt. The traditionally agriculture based community has in
recent years begun to experience a renaissance of commerce expanding into medical,
coal mining, and various other industries. The county seat and county courthouse are
located in McLeansboro, Illinois a town of 3,000 people.
Learn more about the history of Hamilton County, Illinois below.