A combined almost 1,000 acres were listed for sale in South Dakota's Harding County recently; the value of all Harding County farms, ranches, hunting land and other land for sale was almost $900,000. Harding County ranks 50th out of 66 counties in South Dakota for the total number of acres of land currently advertised for sale. Buffalo had the most land for sale. Agriculture and farming drives the Harding County economy, with 250 farms recorded in the county during the U.S. Census in 2012. Farming activities in Harding County generate annual revenues of $3 million, the majority of which comes from livestock products. Harding County is one of the ten largest counties in South Dakota (2,678 square miles). It's located in the Black Hills & Badlands South Dakota region of South Dakota.