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Welcome to Jefferson County!  This year we are celebrating our 100th Anniversary.  For upcoming events, please click the centennial logo. 

If you would like to follow us on facebook, like us at Jefferson County Facebook Page.  We are also on twitter at @JeffersonCoID.

Courthouse Hours: 

Mon. through Fri., 9 am to 5 pm

Courthouse Directions

210 Courthouse Way
Rigby, ID  83442

Jefferson County Brochure

In the Spotlight

Please click here to read the letter to the Board from the County's attorney in the Post Company dba Jefferson Star vs. Jefferson County Board of Commissioners.

Please click here for more information on Illegal Lot Splitting.





Photo of Lewisville Town Hall, Jail, and Library built in 1912


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.

Jefferson County Interactive Map

Jefferson County Capital Improvement Plan

Jefferson County Comprehensive Plan 

Jefferson County Transportation Plan Part I

Jefferson County Transportation Plan Part II