Jefferson County is located in eastern Idaho.  Named after Thomas Jefferson, the third president of the United States, the county was established in 1913 with the county seat at Rigby.  As of 2010, the population was 26,140.  The Idaho Department of Commerce offers the following description: "Jefferson County is located in eastern Idaho. It ranks 14th among Idaho counties in population and 28th in area. The federal government owns nearly 47 percent of the county. Agriculture and food processing are the largest basic industries and dominate the economy, but government and trade sectors provide the largest employment. Annual average total civilian employment increased 10.8 percent from 1996 to 2006. Major employers include Blaine Larsen Farms Inc., Broulim’s Foodtown, Idaho Fresh Pak Inc., Idaho Pacific Corporation, Rigby Produce Inc., Jefferson County government, Jefferson, Ririe and West Jefferson schooldistricts and the Idaho Transportation Department." For more information about Jefferson County, please click the "About Us" tab located on the left side.  For more information about our departments, please click the "Departments" tab.  For a list of phone numbers, please click the "Directory" tab. Courthouse Hours:  Mon. through Fri., 9 am to 5 pm Courthouse Directions 210 Courthouse Way Rigby, ID  83442 Jefferson County Brochure In the Spotlight Taxes are due December 20th.  Taxes may be paid in person at the Treasurer’s Office in the County Courthouse, online at https://www.accessidaho.org/ai/payport/online/pp_jefferson/index.html or mailed to:   Kristine Lund Jefferson County Tax Collector P.O. Box 146 Rigby, ID  83442 The County Line Landfill will be closed December 27 & 28 and open normal hours after New Years.

Jefferson County Map  Idaho State Maps Jefferson County Interactive Map Jefferson County Capital Improvement Plan Jefferson County Comprehensive Plan    To update your information in the CodeRED system, please click on the link.  For any questions, please contact Jefferson County's Sheriff's Office at (208) 745-9210.