List of counties in Idaho
Wikimedia list article
||FIPS code||County seat||Established||Origin||Meaning of name||Population||Area||Map|
|Ada County||001||Boise||1864||Boise County||Ada Riggs, daughter of H. C. Riggs, a member of the Idaho Territorial Legislature.||300,904||1,055 sq mi
|Adams County||003||Council||1911||Washington County||John Adams (1735-1826), second President of the United States (1797-1801).||3,476||1,365 sq mi
|Bannock County||005||Pocatello||1893||Bingham County||Bannock Native American tribe.||75,565||1,113 sq mi
|Bear Lake County||007||Paris||1893||Oneida County||Bear Lake on the Utah/Idaho border.||6,411||971 sq mi
|Benewah County||009||St. Maries||1915||Kootenai County||Benewah, chief of the Coeur d'Alene Tribe||9,171||776 sq mi
|Bingham County||011||Blackfoot||1885||Oneida County||Henry H. Bingham (1841-1912), a general in the American Civil War and a U.S. Congressman from Pennsylvania.||41,735||2,095 sq mi
|Blaine County||013||Hailey||1895||Alturas County||James G. Blaine (1830-1893), United States Secretary of State (1881, 1889-1892).||18,991||2,645 sq mi
|Boise County||015||Idaho City||1864||Original county||Boise River||6,670||1,902 sq mi
|Bonner County||017||Sandpoint||1907||Kootenai County||Edwin L. Bonner, originator of 1864 ferry service on the Kootenai River.||36,835||1,738 sq mi
|Bonneville County||019||Idaho Falls||1911||Bingham County||Benjamin Bonneville (1796-1878), a French-born explorer of the western United States.||82,522||1,869 sq mi
|Boundary County||021||Bonners Ferry||1915||Bonner||Borders Canada on the north.||9,871||1,269 sq mi
|Butte County||023||Arco||1917||Bingham, Blaine, and Jefferson counties||Buttes rising from the Snake River Plain.||2,899||2,233 sq mi
|Camas County||025||Fairfield||1917||Blaine County||Camassia, a plant species important as a food source among Native Americans and early settlers.||991||1,075 sq mi
|Canyon County||027||Caldwell||1892||Ada County||Disputed, either a canyon of the Boise River near Caldwell or a canyon of the Snake River which forms part of the county's boundary.||131,441||590 sq mi
|Caribou County||029||Soda Springs||1919||Bannock County||Caribou Mountains||7,304||1,766 sq mi
|Cassia County||031||Burley||1879||Owyhee County||Disputed, either Cassia Creek or a member of the Mormon Battalion, James John Cazier.||21,416||2,567 sq mi
|Clark County||033||Dubois||1919||Fremont County||Sam K. Clark, early settler and a member of the Idaho Senate.||1,022||1,765 sq mi
|Clearwater County||035||Orofino||1911||Nez Perce County||Clearwater River||8,930||2,462 sq mi
|Custer County||037||Challis||1881||Alturas and Lemhi counties||General Custer mine, named after George Armstrong Custer (1839-1876), United States Army general.||4,342||4,926 sq mi
|Elmore County||039||Mountain Home||1889||Alturas County||Ida Elmore mines, locally noted for gold and silver production in the 1860s.||29,130||3,078 sq mi
|Franklin County||041||Preston||1913||Oneida County||Franklin D. Richards (1821-1899), early LDS Church apostle.||11,329||666 sq mi
|Fremont County||043||St. Anthony||1893||Bingham County||John C. Frémont (1813-1890), an explorer of the western United States.||11,819||1,867 sq mi
|Gem County||045||Emmett||1915||Boise and Canyon counties||State nickname of "Gem State."||15,181||563 sq mi
|Gooding County||047||Gooding||1913||Lincoln County||Frank R. Gooding (1859-1928), seventh Governor of Idaho (1905-1909), U.S. Senator (1921-1928).||14,155||731 sq mi
|Idaho County||049||Grangeville||1864||Original county||Columbia River steamship Idaho launched in 1860. Name predates both Idaho Territory and the State of Idaho.||15,511||8,485 sq mi
|Jefferson County||051||Rigby||1913||Fremont County||Thomas Jefferson (1743-1826), third President of the United States (1801-1809).||19,155||1,095 sq mi
|Jerome County||053||Jerome||1919||Gooding and Lincoln counties||Disputed, either North Side Irrigation Project developer Jerome Hill, his son-in-law Jerome Kuhn, or his grandson Jerome Kuhn, Jr.||18,342||600 sq mi
|Kootenai County||055||Coeur d'Alene||1864||Nez Perce County||Kootenai Native American tribe.||108,685||1,245 sq mi
|Latah County||057||Moscow||1888||Nez Perce County||Latah Creek, Nez Perce for "the place of pine trees and sestle."||34,935||1,077 sq mi
|Lemhi County||059||Salmon||1869||Idaho County||Limhi, king of the Nephites according to the Book of Mormon.||7,806||4,564 sq mi
|Lewis County||061||Nezperce||1911||Nez Perce County||Meriwether Lewis (1774-1809), a leader of the Lewis and Clark Expedition.||3,747||479 sq mi
|Lincoln County||063||Shoshone||1895||Logan County||Abraham Lincoln (1809-1865), sixteenth President of the United States (1861-1865). Idaho Territory was founded under Lincoln's administration.||4,044||1,206 sq mi
|Madison County||065||Rexburg||1913||Fremont County||James Madison (1751-1836), fourth President of the United States (1809-1817).||27,467||472 sq mi
|Minidoka County||067||Rupert||1913||Lincoln County||Disputed Native American origin, either Lakota for "a fountain or spring of water" or Shoshoni for "broad expanse."||20,174||760 sq mi
|Nez Perce County||069||Lewiston||1864||Original county||The Nez Perce, a Native American tribe.||37,410||849 sq mi
|Oneida County||071||Malad City||1864||Original County||Oneida Lake in New York state, where many early settlers were from.||4,125||1,200 sq mi
|Owyhee County||073||Murphy||1863||Original county||Corruption of Hawaii. Hawaiian fur trappers explored the area in 1819 and 1820.||10,644||7,678 sq mi
|Payette County||075||Payette||1917||Canyon County||Francois Payette (1793-1844?), Canadian-born fur trader and early settler.||20,578||408 sq mi
|Power County||077||American Falls||1913||Bingham, Blaine, and Oneida counties||The American Falls Power Plant||7,538||1,406 sq mi
|Shoshone County||079||Wallace||1864||Original county||Shoshone Native American tribe.||13,771||2,634 sq mi
|Teton County||081||Driggs||1915||Bingham, Fremont, and Madison counties||Teton Range and valley.||5,999||450 sq mi
|Twin Falls County||083||Twin Falls||1907||Cassia County||Twin Falls waterfall on the Snake River.||64,284||1,925 sq mi
|Valley County||085||Cascade||1917||Boise and Idaho counties||Long Valley located in the county.||7,651||3,678 sq mi
|Washington County||087||Weiser||1879||Ada County||George Washington (1732-1799), first President of the United States (1789-1797).||9,977||1,456 sq mi
Old Idaho countiesEdit
- Alturas County: A huge county in south-central Idaho that was formed in 1864, but split up in 1895.
- Lah-Toh County, Idaho Territory: A county in northern Idaho that was formed in 1864, but it was ended a short time later in 1867.
- Logan County: Formed by a partition of Alturas County in 1889, bit it was shortly ended in 1895.
- "EPA County FIPS Code Listing". EPA.gov. Retrieved 2008-02-23.
- National Association of Counties. "NACo - Find a county". Archived from the original on 2007-10-24. Retrieved 2008-04-26.
- Hailey, John (1910). The History of Idaho. Press of Syms-York company. pp. 305–307. OCLC 5793481. Retrieved 2008-04-26.
- "List of Idaho Counties - Idaho.gov". State of Idaho. Retrieved 2008-07-30.
- "Idaho QuickFacts". U.S. Census Bureau. Archived from the original on 2008-05-14. Retrieved 2008-04-23. (2000 Census)