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Idaho Counties
There are44 Counties in Idaho.
Counties are the largest political divisions within the state.

When Idaho became a territory in March, 1863, there were four Counties in existence: Boise, Idaho, Nez Perce and Shoshone. By the time Idaho became a state 27 years later, there were 15 counties. The rest of the 44 Counties came into existence during the 30 years after Idaho became a state. Two of the former Counties disappeared during this time. Alturas, which was created in 1864, was later divided into the many Counties now found in central Idaho. Logan County was only in existence for six years, from 1889 to 1895. It was combined with Alturas to form Blaine County and Lincoln County, which was formed just two weeks after Logan lost its identity.

Lemhi County, Idaho

Lemhi County History, Geography, and Demographics

County Seat: Salmon
Year Organized: 1869
Square Miles: 4,564
Court House:

206 Courthouse Drive
County Courthouse
Salmon, ID 83467-3900

Etymology - Origin of County Name

Lemhi County is named for Fort Lemhi, a local mission and fort of the Church of Jesus Christ of Latter-Day Saints, which in turn was named for King Lemhi, a figure in the Book of Mormon.


County QuickFacts: Census Bureau Quick Facts

County History

Established January 9, 1869 with its county seat at Salmon. Named for Fort Lemhi, the L.D.S. Salmon River Mission, which was named for King Lemhi in the book of Mormon. Lewis and Clark were the first white men in this area.

Neighboring Counties:

  • North: Ravalli County, Mont.
  • East: Beaverhead County, Mont.
  • Southeast: Clark County; Butte County
  • Southwest: Custer County
  • West: Valley County
  • Northwest: Idaho County

Cities and Towns:

- Challis city Incorporated Area
- Leadore city Incorporated Area
- Salmon (County Seat) city Incorporated Area

County Resources:

Enter County Resources and Information Here

County Resources
Counties: US Map
The history of our nation was a prolonged struggle to define the relative roles and powers of our governments: federal, state, and local. And the names given the counties, our most locally based jurisdictions, reflects the "characteristic features of this country!"