Courthouses in Dennison, Ohio, the US. Courthouses locations in Dennison, Ohio. Find the nearest courthouses locations, near you. All types of business services ATM Courthouse Finance Lawyer School All courthouses in Dennison Harcatus Tri County Comm Courthouse +1 740-922-2039 7325 Fuhr Drive Southeast, Dennison, Ohio 44621 Write a review Phone Website Directions