Courthouses in Cadiz, Ohio, the US. Courthouses locations in Cadiz, Ohio. Find the nearest courthouses locations, near you. All types of business services Accounting ATM Bank Courthouse Finance Funeral home Insurance Lawyer Real estate School Travel All courthouses in Cadiz Harrison County Magistrate Courthouse +1 740-942-4623 100 East Market Street # 100, Cadiz, Ohio 43907 Write a review Phone Website Directions Harrison County Sheriff's Office Courthouse +1 740-942-2197 114 Court Street, Cadiz, Ohio 43907 Write a review Phone Website Directions