Established: February 18, 1913
County seat:  Rigby, Idaho
Named for: Thomas Jefferson, third president of the United States.
The first settlers were Mormons, shortly after their arrival they began
constructing irrigation systems throughout the area.
You may be interested to learn that television was
invented in the city of Rigby by Philo T Farnsworth
Land Area: 1,106 square miles.

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Research Helps	Addresses	Jefferson County Churches
Cemeteries	Family Links	Jefferson County History
Idaho Vital Records	Western States Marriage Record Index	Idaho State Death Index 1911-1951
Populated Places	City of Rigby	Mudlake
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2000 Census Statistics Jefferson County	Join the Jefferson County Mailing List	Idaho Archives County index
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Political Graveyard Jefferson County, Idaho	National Register of Historical Places in Jefferson County
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