The combined value of farms, ranches, and rural real estate for sale in Day County recently on Land.com was almost $12 million. This represents approximately 2,000 acres of farms and ranches for sale in Day County. Day County ranks 23rd in South Dakota for the combined amount of land currently advertised for sale. Among cities in Day County with land and rural real estate for sale, Webster featured the most land for sale. Agriculture and farming drives the Day County economy, with 693 farms recorded in the county during the U.S. Census in 2012. Farming activities in Day County generate annual revenues of $9 million, most of which is from crops. Day County is the 28th largest county (1,091 square miles) in South Dakota. It's located in the Glacial Lakes & Prairies South Dakota region of the state.