Of 66 counties in the Coyote State, Fall River County ranks 12th by size (1,749 square miles). Fall River County is in Black Hills & Badlands South Dakota. Fall River County, South Dakota, includes about 1,000 acres of farms for sale based on recent Land Network data. The combined market value of farms, ranches, hunting land and other land for sale here was about $3 million. Browse all Fall River County 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 individual needs. The most common type of land for sale by combined acreage in Fall River County is residential property.