Established February 18, 1913 with its county seat at
Rigby. Named for Thomas Jefferson, third president of
the United States. The first settlers were Mormons who
constructed irrigation systems.
County Seat: Rigby
Land Area: 1,106 square miles.
County Clerk County Courthouse Rigby, ID 83442-0538
Phone: (208) 745-7756 Fax: (208) 745-6636Location
* Surrounding Counties: Bingham
* Bonneville
* Butte
* Clark
* Fremont
* Madison
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