INTERESTING FACTS: 3rd least populated county in Illinois. Often called “The Island” because the course of the IL and MS rivers form the county into a peninsula. Named after former VP John C. Calhoun. Home to Two Rivers National Park featuring several migrating birds as well as its summer peaches. The county is also the 2nd highest nesting area for bald eagles in North America. Home to the Center for American Archeology in Kampsville.
- Hardin – population 967, home to some of the best archaeological info in the country dating back 10,000 years of Native American habitation.
*List of Historic Places in Calhoun County