• Washington County Illinois

    Our History

    On January 2, 1818, the Legislative Council and House of Representatives of Illinois Territory passed an act that separated what is now Washington and Clinton County from St. Clair County...

    Learn More Departments
  • Nashville, Illinois

    County Courthouse

    The symmetrical design of the exterior follows that of the existing building. A sand finished face brick was selected to match the color of the original bricks, which were made in the Nashville area...

    Directory Calendar



Welcome to the Official website for Washington County, Illinois. We hope you will find the information and resources you need within these pages. Please contact us if you require assistance.




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