Jefferson County, Idaho

Jefferson County is a county in the U.S. state of Idaho. As of the 2020 census, 30,891 people lived there. The county seat and largest city is Rigby. The county was founded in 1913 and named after Thomas Jefferson, the 3rd President of the United States (1801–1809).

 Communities 

 Cities 
 Hamer
 Lewisville
 Menan
 Mud Lake
 Rigby
 Ririe
 Roberts

 Unincorporated communities 
 Grant
 Heise
 Monteview
 Terreton

 References 

Category:1913 establishments in Idaho
Category:Idaho counties