The total value of land for sale in Smith County recently on Land.com was $10 million. This represents almost 2,000 acres of farms and ranches for sale in Smith County. Smith County ranks 66th in the Sunflower State for the total number of acres of land currently advertised for sale. Of all farms and ranches for sale in Smith County, Smith Center featured the most land for sale. Agriculture and farming drives the Smith County economy, with 497 farms recorded in the county during the U.S. Census in 2012. Farming activities in Smith County generate annual revenues of $13 million, most of which is from crops. Smith County is the 31st largest county (896 square miles) in Kansas. It's located in the Tallgrass Prairie Kansas region of the state.