The value of farms, ranches, hunting land and other land for sale in Idaho's Jefferson County recently on Land.com was almost $18 million. This represents around 1,000 acres of farms and ranches for sale in Jefferson County. Jefferson County ranks 41st in Idaho for the total acreage of land currently advertised for sale. Among cities in Jefferson County with land and rural real estate for sale, Rigby featured the most land for sale. Its economy is defined as agricultural, with 776 farms recorded in the county during the most recent U.S. Census. Farming activities in Jefferson County generate annual revenues of $5 million, most of which is from crops. Jefferson County is the 28th largest county (1,105 square miles) in Idaho. It's located in the Eastern Idaho region of the state.