The value of all farms, ranches, hunting land and other land for sale in Idaho's Jefferson County recently was $113 million, representing a combined 789 acres of land for sale in Jefferson County. Jefferson County ranks ninth out of 44 counties in the Gem State for the combined amount of land currently advertised for sale. Of all locations in Jefferson County with ranches, farms, hunting land and other rural land and acreage for sale, Rigby had the most land for sale. Jefferson County has a large agricultural economy, with 776 farms recorded in the county during the latest U.S. Census. Farming activities in Jefferson County generate annual revenues of $5 million, most of which is from crops. Jefferson County is Idaho's 28th biggest county (1,105 square miles). It's located in the Eastern Idaho region of Idaho.