Courthouses in Knoxville, Illinois, the US. Courthouses locations in Knoxville, Illinois. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Funeral home Insurance Real estate School All courthouses in Knoxville Knox County Museum Courthouse +1 309-289-2814 300 West Main Street, Knoxville, Illinois 61448 Write a review Phone Website Directions