There was a combined almost $100 million of farms, ranches, hunting land and other land for sale in Fairfield County, Ohio, recently on Land.com. The total size of all Fairfield County farms, ranches, and rural real estate for sale was 2,000 acres. Fairfield County ranks 17th in the Buckeye State for the total number of acres of land currently advertised for sale. Of all farms, ranches, and rural real estate for sale in Fairfield County, Lancaster had the most land for sale. Fairfield County is the 29th largest county (508 square miles) in Ohio. It's located in the Central Ohio region of the state.