There was a total of almost $80 million of farms, ranches, and rural real estate for sale in Clermont County recently on Land.com. The total of all Clermont County farms, ranches, and rural real estate for sale was around 2,000 acres. Clermont County ranks 20th in Ohio for the total acreage of land currently advertised for sale. Batavia had the most land for sale. Clermont County is Ohio's 44th largest county (459 square miles). It's located in the Southwest Ohio region of Ohio.