Land for sale in Ohio's Brown County recently totaled around $39 million and nearly 2,000 acres. Brown County ranks 30th in Ohio for the total number of acres of land currently advertised for sale. Of all locations in Brown County with farms, ranches, and rural real estate for sale, Buford featured the most land for sale. Brown County is the 35th largest county (493 square miles) in Ohio. It's located in the Southwest Ohio region of the state.