Brown County is in Glacial Lakes & Prairies South Dakota. Of the 66 counties in the Mount Rushmore State, 1,730-square-mile Brown County ranks 13th by size. There is roughly 2,000 acres of farms for sale in South Dakota's Brown County based on recent Land Network data, making it the most common type of land for sale in Brown County. The combined market value of farms, ranches, hunting land and other land for sale here is $5 million. The average price of farms for sale in Brown County was $1 million. Farms for sale in Brown County support livestock including horses, cattle, goats, pig and sheep. Browse all South Dakota farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future business or lifestyle needs.