Reesville, OhioReesville is an unincorporated community in northwestern Richland Township, Clinton County, Ohio, United States. It has a post office with the ZIP code 45166. It is located along State Route 72.HistoryReesville was platted in 1857 by Moses Reese, and named for him. A post office has been in operation at Reesville since 1858.EducationReesville is located within the ParksThere is a parking lot next to the Post Office for the . If you travel South on the trail you go to Melvin if you travel North you head to Sabina.