Of 66 counties in the Mount Rushmore State, Codington County ranks 46th by size (717 square miles). Codington County is in Glacial Lakes & Prairies South Dakota. A recent survey of Land Network data totals 1,000 acres of undeveloped land for sale in South Dakota's Codington County, which is valued at a combined $2 million. Browse all Codington County undeveloped acreage for sale on the Land Network to find your next commercial property or land investment. The most common type of land for sale by combined acreage in Codington County is farms.