The current Warren County Courthouse is actually the 4th county courthouse. The third county courthouse was located on what is now the front lawn of the current courthouse.
Welcome to the official website for Warren County, Illinois. This site has been developed for the convenience of our residents and visitors. We hope you’ll find a wealth of information on our regional communities, our county services, and our very special regional events that make Warren County a great place to live, work and relax. Thank you for visiting, and please let us know how we can serve you better.
Warren County is a rural community, rich in tradition and history. A wonderful place to live and to raise a family.
Voter Registration Deadline
Warren County Courthouse
100 West Broadway
Monmouth, IL 61462