Jefferson County, Idaho

Jefferson County is a county in the U.S. state of Idaho. As of the 2010 census, 26,140 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).

Cities

 * Hamer
 * Lewisville
 * Menan
 * Mud Lake
 * Rigby
 * Ririe
 * Roberts

Unincorporated communities

 * Grant
 * Heise
 * Monteview
 * Terreton