Hanson County ranks 52nd out of 66 counties in South Dakota for the total number of acres of land currently advertised for sale. Of all locations in Hanson County with land for sale, Alexandria had the most land for sale. Its economy is defined as agricultural, with 370 farms recorded in the county during the most recent U.S. Census. Farming activities in Hanson County generate annual revenues of $15 million, most of which is from crops. Hanson County is the 64th largest county (435 square miles) in South Dakota. It's located in the Southeast South Dakota region of South Dakota.