The total value of farms and rural land for sale in Adams County recently on Land.com was $14 million. This represents approximately 1,000 acres of farms, hunting land and other rural land and acreage for sale in Adams County. Adams County ranks 80th out of 92 counties in Indiana for the combined amount of land currently advertised for sale. Decatur featured the most land for sale. Adams County is Indiana's 73rd biggest county (339 square miles). It's located in the East Indiana region of Indiana.