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About Idaho
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Jefferson County

Background

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) 745-6636

County Web Site

Location

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