Jefferson County, Idaho

county in Idaho, United States

Jefferson County is a county in the U.S. state of Idaho. As of the 2020 census, 30,891 people lived there.[1] The county seat and largest city is Rigby.[2] The county was founded in 1913 and named after Thomas Jefferson,[3] the 3rd President of the United States (1801–1809).

Jefferson County
Entering Jefferson County in Grant, Idaho.
Entering Jefferson County in Grant, Idaho.
Map of Idaho highlighting Jefferson County
Location within the U.S. state of Idaho
Map of the United States highlighting Idaho
Idaho's location within the U.S.
Coordinates: 43°49′N 112°19′W / 43.82°N 112.31°W / 43.82; -112.31
Country United States
State Idaho
FoundedFebruary 18, 1913
Named forThomas Jefferson
SeatRigby
Largest cityRigby
Area
 • Total1,106 sq mi (2,860 km2)
 • Land1,094 sq mi (2,830 km2)
 • Water12 sq mi (30 km2)  1.1%
Population
 (2020)
 • Total30,891
 • Density28.24/sq mi (10.90/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitewww.co.jefferson.id.us

Communities change

Cities change

Unincorporated communities change

References change

  1. "QuickFacts: Jefferson County, Idaho". United States Census Bureau. Retrieved September 25, 2023.
  2. "Find a County". National Association of Counties. Archived from the original on 2011-05-31. Retrieved 2011-06-07.
  3. "Jefferson County". State of Idaho. Archived from the original on 2009-08-15. Retrieved 2009-05-31.