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List of counties in Idaho
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There are 44 counties in the U.S. state of Idaho.
Alphabetical list
County |
FIPS Code [1] |
County seat [2] |
Established [2] |
Origin [3] |
Meaning of name [4] |
Population [2][5] |
Area [2][5] |
Map |
---|---|---|---|---|---|---|---|---|
Ada County | 001 | Boise | 1864 | Boise County | Ada Riggs, daughter of H. C. Riggs, a member of the Idaho Territorial Legislature. | 300,904 | ( 2,732 km²) |
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 | ( 3,535 km²) |
1,365 sq miState map highlighting Adams County |
Bannock County | 005 | Pocatello | 1893 | Bingham County | Bannock Native American tribe. | 75,565 | ( 2,883 km²) |
1,113 sq miState map highlighting Bannock County |
Bear Lake County | 007 | Paris | 1893 | Oneida County | Bear Lake on the Utah/Idaho border. | 6,411 | ( 2,515 km²) |
971 sq miState map highlighting Bear Lake County |
Benewah County | 009 | St. Maries | 1915 | Kootenai County | Benewah, chief of the Coeur d'Alene Tribe | 9,171 | ( 2,010 km²) |
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 | ( 5,426 km²) |
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 | ( 6,851 km²) |
2,645 sq miState map highlighting Blaine County |
Boise County | 015 | Idaho City | 1864 | Original county | Boise River | 6,670 | ( 4,926 km²) |
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 | ( 4,501 km²) |
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 | ( 4,841 km²) |
1,869 sq miState map highlighting Bonneville County |
Boundary County | 021 | Bonners Ferry | 1915 | Bonner | Borders Canada on the north. | 9,871 | ( 3,287 km²) |
1,269 sq miState map highlighting Boundary County |
Butte County | 023 | Arco | 1917 | Bingham, Blaine, and Jefferson counties | Buttes rising from the Snake River Plain. | 2,899 | ( 5,783 km²) |
2,233 sq miState map highlighting Butte County |
Camas County | 025 | Fairfield | 1917 | Blaine County | Camassia, a plant species important as a food source among Native Americans and early settlers. | 991 | ( 2,784 km²) |
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 | ( 1,528 km²) |
590 sq mi ![]() |
Caribou County | 029 | Soda Springs | 1919 | Bannock County | Caribou Mountains | 7,304 | ( 4,574 km²) |
1,766 sq miState map highlighting Caribou County |
Cassia County | 031 | Burley | 1879 | Owyhee County | Disputed, either Cassia Creek or a member of the Mormon Battalion, James John Cazier. | 21,416 | ( 6,648 km²) |
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 | ( 4,571 km²) |
1,765 sq miState map highlighting Clark County |
Clearwater County | 035 | Orofino | 1911 | Nez Perce County | Clearwater River | 8,930 | ( 6,377 km²) |
2,462 sq miState map highlighting Clearwater County |
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 | ( 12,758 km²) |
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 | ( 7,972 km²) |
3,078 sq mi ![]() |
Franklin County | 041 | Preston | 1913 | Oneida County | Franklin D. Richards (1821-1899), early LDS Church apostle. | 11,329 | ( 1,725 km²) |
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 | ( 4,836 km²) |
1,867 sq miState map highlighting Fremont County |
Gem County | 045 | Emmett | 1915 | Boise and Canyon counties | State nickname of "Gem State." | 15,181 | ( 1,458 km²) |
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 | ( 1,893 km²) |
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 | ( 21,976 km²) |
8,485 sq miState map highlighting Idaho County |
Jefferson County | 051 | Rigby | 1913 | Fremont County | Thomas Jefferson (1743-1826), third President of the United States (1801-1809). | 19,155 | ( 2,836 km²) |
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 | ( 1,554 km²) |
600 sq mi ![]() |
Kootenai County | 055 | Coeur d'Alene | 1864 | Nez Perce County | Kootenai Native American tribe. | 108,685 | ( 3,225 km²) |
1,245 sq miState map highlighting Kootenai County |
Latah County | 057 | Moscow | 1888 | Nez Perce County | Latah Creek, Nez Perce for "the place of pine trees and sestle." | 34,935 | ( 2,789 km²) |
1,077 sq mi ![]() |
Lemhi County | 059 | Salmon | 1869 | Idaho County | Limhi, king of the Nephites according to the Book of Mormon. | 7,806 | ( 11,821 km²) |
4,564 sq miState map highlighting Lemhi County |
Lewis County | 061 | Nezperce | 1911 | Nez Perce County | Meriwether Lewis (1774-1809), a leader of the Lewis and Clark Expedition. | 3,747 | ( 1,241 km²) |
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 | ( 3,124 km²) |
1,206 sq miState map highlighting Lincoln County |
Madison County | 065 | Rexburg | 1913 | Fremont County | James Madison (1751-1836), fourth President of the United States (1809-1817). | 27,467 | ( 1,222 km²) |
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 | ( 1,968 km²) |
760 sq miState map highlighting Minidoka County |
Nez Perce County | 069 | Lewiston | 1864 | Original county | The Nez Perce, a Native American tribe. | 37,410 | ( 2,199 km²) |
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 | ( 3,108 km²) |
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 | ( 19,886 km²) |
7,678 sq mi ![]() |
Payette County | 075 | Payette | 1917 | Canyon County | Francois Payette (1793-1844?), Canadian-born fur trader and early settler. | 20,578 | ( 1,057 km²) |
408 sq mi ![]() |
Power County | 077 | American Falls | 1913 | Bingham, Blaine, and Oneida counties | The American Falls Power Plant | 7,538 | ( 3,642 km²) |
1,406 sq mi ![]() |
Shoshone County | 079 | Wallace | 1864 | Original county | Shoshone Native American tribe. | 13,771 | ( 6,822 km²) |
2,634 sq mi ![]() |
Teton County | 081 | Driggs | 1915 | Bingham, Fremont, and Madison counties | Teton Range and valley. | 5,999 | ( 1,165 km²) |
450 sq mi ![]() |
Twin Falls County | 083 | Twin Falls | 1907 | Cassia County | Twin Falls waterfall on the Snake River. | 64,284 | ( 4,986 km²) |
1,925 sq mi ![]() |
Valley County | 085 | Cascade | 1917 | Boise and Idaho counties | Long Valley located in the county. | 7,651 | ( 9,526 km²) |
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 | ( 3,771 km²) |
1,456 sq mi ![]() |
Old Idaho counties
- 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.
References
- ↑ "EPA County FIPS Code Listing". EPA.gov. http://www.epa.gov/enviro/html/codes/id.html. Retrieved 2008-02-23.
- ↑ 2.0 2.1 2.2 2.3 National Association of Counties. "NACo - Find a county". http://www.naco.org/Template.cfm?Section=Find_a_County&Template=/cffiles/counties/state.cfm&state.cfm&statecode=ID. Retrieved 2008-04-26.
- ↑ Hailey, John (1910). The History of Idaho. Press of Syms-York company. pp. 305–307. . https://books.google.com/books?id=2jvsOU6DSO4C. Retrieved 2008-04-26.
- ↑ "List of Idaho Counties - Idaho.gov". State of Idaho. http://www.idaho.gov/aboutidaho/county/index.html. Retrieved 2008-07-30.
- ↑ 5.0 5.1 "Idaho QuickFacts". U.S. Census Bureau. http://quickfacts.census.gov/qfd/maps/idaho_map.html. Retrieved 2008-04-23. (2000 Census)
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