Of 66 counties in the state, Pennington County ranks third in terms of size (2 million acres). Pennington County is in the Black Hills & Badlands South Dakota region. Recent listings of ranches for sale in Pennington County, South Dakota, totals about 1,000 acres and a combined market value of roughly $5 million. The most common type of land for sale by combined acreage in Pennington County is residential property. The average price of ranches for sale in Pennington County was $3 million. Browse all South Dakota ranches for sale on the Land Network to find the ranch that's right for your business or commercial needs, from the sprawling legacy ranch to unbelievable residential ranch for your second home, investment property or retirement nest egg.