Johnson County, Administrative county in southern Illinois, United States.
Johnson County is an administrative county in southern Illinois that spans a substantial area. The landscape features rolling hills, forests, and waterways that define its character.
The county was founded in 1812, carved out from neighboring Randolph County. It was named after Richard Mentor Johnson, a political figure of that era.
Local communities are rooted in farming, where family operations have shaped the land and daily life for generations. This agricultural identity remains central to how people here connect with their surroundings.
Vienna serves as the county seat and center for local government services. Interstate 24 and Interstate 57 connect the area, making travel between different parts straightforward.
A section of the Cypress Creek National Wildlife Refuge is located within the county, protecting diverse ecosystems. Visitors can observe rare plant and animal species in their natural habitats here.
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