Land for sale in Hamlin County, South Dakota, recently totaled approximately $5 million and around 1,000 acres. Hamlin County ranks 28th in the state for the total acreage of land currently advertised for sale. Of all ranches, farms, hunting land and other rural land and acreage for sale in Hamlin County, Lake Norden had the most land for sale. Its economy is defined as agricultural, with 489 farms recorded in the county during the most recent U.S. Census. Farming activities in Hamlin County generate annual revenues of $9 million, most of which is from crops. Hamlin County is South Dakota's 57th largest county (538 square miles). It's located in the Glacial Lakes & Prairies South Dakota region of the state.