Brown County is in Glacial Lakes & Prairies South Dakota. Of the 66 counties in the Coyote State, Brown County ranks 13th in terms of size (1,730 square miles). Brown County, South Dakota, has almost 2,000 acres of farms for sale based on recent Land Network data. The combined market value of farms and ranches for sale here was almost $6 million. The average price of farmland for sale in Brown County was $1 million. Farms for sale in Brown County sustain livestock including cattle, horses, goats 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 commercial or lifestyle needs.