Land for sale in Jay County recently totaled almost $2 million and around 1,000 acres. Jay County ranks 91st in the state for the total acreage of land currently advertised for sale. Among cities in Jay County with farms, hunting land and other rural land and acreage for sale, Dunkirk featured the most land for sale. Jay County is the 59th biggest county (384 square miles) in Indiana. It's located in the East Indiana region of the state.