Land for sale in South Dakota's Harding County recently totaled nearly $900,000 and around 1,000 acres. Harding County ranks 48th out of 66 counties in South Dakota for the total acreage of land currently advertised for sale. Among cities in Harding County with land and rural real estate for sale, Buffalo featured the most land for sale. Its economy is defined as agricultural, with 250 farms recorded in the county during the most recent U.S. Census. 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.