Of 66 counties in the Mount Rushmore State, Pennington County ranks third in terms of size (2,784 square miles). Pennington County is in the Black Hills & Badlands South Dakota region. The total value of 3,000 acres of farms recently listed for sale in South Dakota's Pennington County was nearly $7 million. The average price of farms for sale in Pennington County was $1 million. Farms for sale in Pennington County feature livestock including cattle and horses. 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 individual needs.