State of Idaho
Flag of IdahoState seal of Idaho
Gem State
Motto(s): Esto perpetua (Latin for Let it be perpetual)
State song(s): Here We Have Idaho
Map of the United States with Idaho highlighted
Official languageEnglish[1]
(and largest city)
Largest metroBoise metropolitan area
AreaRanked 14th
 • Total83,797 sq mi
(216,900 km2)
 • Width305 miles (491 km)
 • Length479 miles (771 km)
 • % water0.98
 • Latitude42° N to 49° N
 • Longitude111°03′ W to 117°15′ W
PopulationRanked 39th
 • Total1,754,208 (2018)
 • Density20.9/sq mi  (8.09/km2)
Ranked 44th
 • Median household income$52,225[2] (41st)
 • Highest pointBorah Peak[3][4][5]
12,662 ft (3,859 m)
 • Mean5,000 ft  (1,520 m)
 • Lowest pointConfluence of Snake and Clearwater River; Lewiston[4][5]
713 ft (217 m)
Before statehoodOregon Territory, Washington Territory, Idaho Territory
Admitted to the UnionJuly 3, 1890 (43rd)
GovernorBrad Little (R)
Lieutenant GovernorJanice McGeachin (R)
 • Upper houseSenate
 • Lower houseHouse of Representatives
U.S. SenatorsMike Crapo (R)
Jim Risch (R)
U.S. House delegation1. Russ Fulcher (R)
2. Mike Simpson (R) (list)
Time zones 
 • Idaho PanhandlePacific: UTC −8/−7
 • primaryMountain: UTC −7/−6
Idaho state symbols
Flag of Idaho.svg
Seal of Idaho.svg
Living insignia
AmphibianTiger salamander (Ambystoma tigrinum)
FishCutthroat trout (Oncorhynchus clarkii)
FlowerSyringa (Philadelphus lewisii)
Horse breedAppaloosa
InsectMonarch butterfly (Danaus plexippus)
TreeWestern white pine (Pinus monticola)
Inanimate insignia
DanceSquare dance
FossilHagerman horse (Equus simplicidens)
GemstoneStar garnet
SloganGreat Potatoes. Tasty Destinations.
State route marker
Idaho state route marker
State quarter
Idaho quarter dollar coin
Released in 2007
Lists of United States state symbols
Interactive map of Idaho
Digitally colored elevation map of Idaho
Shoshone Falls in south central Idaho
Sixty percent of Idaho's land is held by the National Forest Service or the Bureau of Land Management, and it leads the nation in forest service land as a percentage of total area.[6][7]
Reynolds Creek Experimental Watershed in the Owyhee Mountains, about 50 miles (80 km) southwest of Boise, Idaho

Idaho (/ (About this soundlisten)) is a state in the northwestern region of the United States. It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west. To the north, it shares a small portion of the Canadian border with the province of British Columbia. With a population of approximately 1.7 million and an area of 83,569 square miles (216,440 km2), Idaho is the 14th largest, the 12th least populous and the 7th least densely populated of the 50 U.S. states. The state's capital and largest city is Boise.

Idaho prior to European settlement was inhabited by Native American peoples, some of whom still live in the area. In the early 19th century, Idaho was considered part of the Oregon Country, an area disputed between the U.S. and the United Kingdom. It officially became U.S. territory with the signing of the Oregon Treaty of 1846, but a separate Idaho Territory was not organized until 1863, instead being included for periods in Oregon Territory and Washington Territory. Idaho was eventually admitted to the Union on July 3, 1890, becoming the 43rd state.

Forming part of the Pacific Northwest (and the associated Cascadia bioregion), Idaho is divided into several distinct geographic and climatic regions. In the state's north, the relatively isolated Idaho Panhandle is closely linked with Eastern Washington, with which it shares the Pacific Time Zone – the rest of the state uses the Mountain Time Zone. The state's south includes the Snake River Plain (which has most of the population and agricultural land), while the south-east incorporates part of the Great Basin. Idaho is quite mountainous, and contains several stretches of the Rocky Mountains. The United States Forest Service holds about 38% of Idaho's land, the most of any state.

Industries significant for the state economy include manufacturing, agriculture, mining, forestry, and tourism. A number of science and technology firms are either headquartered in Idaho or have factories there, and the state also contains the Idaho National Laboratory, which is the country's largest Department of Energy facility. Idaho's agricultural sector supplies many products, but the state is best known for its potato crop, which comprises around one-third of the nationwide yield. The official state nickname is the "Gem State", which references Idaho's natural beauty.[8]


The name's origin remains a mystery.[9] In the early 1860s, when the United States Congress was considering organizing a new territory in the Rocky Mountains, eccentric lobbyist George M. Willing suggested the name "Idaho", which he claimed was derived from a Shoshone language term meaning "the sun comes from the mountains" or "gem of the mountains". Willing later claimed he had invented the name.[10][11] Congress decided to name the area Colorado Territory when it was created in February 1861. Thinking they would get a jump on the name, locals named a community in Colorado "Idaho Springs".

However, the name "Idaho" did not fall into obscurity. The same year Congress created Colorado Territory, a county called Idaho County was created in eastern Washington Territory. The county was named after a steamship named Idaho, which was launched on the Columbia River in 1860. It is unclear whether the steamship was named before or after Willing's claim was revealed. Regardless, part of Washington Territory, including Idaho County, was used to create Idaho Territory in 1863.[12]

Despite this lack of evidence for the origin of the name, many textbooks well into the 20th century repeated as fact Willing's account the name "Idaho" derived from the Shoshone term "ee-da-how". A 1956 Idaho history textbook says:

"Idaho" is a Shoshoni Indian exclamation. The word consists of three parts. The first is "Ee", which in English conveys the idea of "coming down". The second is "dah" which is the Shoshoni stem or root for both "sun" and "mountain". The third syllable, "how", denotes the exclamation and stands for the same thing in Shoshoni that the exclamation mark (!) does in the English language. The Shoshoni word is "Ee-dah-how", and the Indian thought thus conveyed when translated into English means, "Behold! the sun coming down the mountain.[13]

An alternative etymology attributes the name to the Plains Apache word "ídaahę́" (enemy) that was used in reference to the Comanche.[14]

Other Languages
Afrikaans: Idaho
አማርኛ: አይዳሆ
Ænglisc: Idaho
العربية: أيداهو
aragonés: Idaho
ܐܪܡܝܐ: ܐܝܕܐܗܘ
arpetan: Idaho
asturianu: Idaho
Avañe'ẽ: Idaho
Aymar aru: Idaho suyu
azərbaycanca: Aydaho
বাংলা: আইডাহো
Bân-lâm-gú: Idaho
башҡортса: Айдахо
беларуская: Айдаха
беларуская (тарашкевіца)‎: Айдага
भोजपुरी: इडाहो
Bikol Central: Idaho
Bislama: Idaho
български: Айдахо
Boarisch: Idaho
bosanski: Idaho
brezhoneg: Idaho
буряад: Айдахо
català: Idaho
Чӑвашла: Айдахо
Cebuano: Idaho
čeština: Idaho
Chavacano de Zamboanga: Idaho
corsu: Idaho
Cymraeg: Idaho
dansk: Idaho
davvisámegiella: Idaho
Deutsch: Idaho
eesti: Idaho
Ελληνικά: Αϊντάχο
emiliàn e rumagnòl: Idaho
español: Idaho
Esperanto: Idaho
euskara: Idaho
فارسی: آیداهو
Fiji Hindi: Idaho
føroyskt: Idaho
français: Idaho
Frysk: Idaho
Gaeilge: Idaho
Gaelg: Idaho
Gagauz: Idaho
Gàidhlig: Idaho
galego: Idaho
客家語/Hak-kâ-ngî: Idaho
хальмг: Айдахо
한국어: 아이다호주
Hausa: Idaho
Hawaiʻi: ‘Ikahō
հայերեն: Այդահո
हिन्दी: इडाहो
hornjoserbsce: Idaho
hrvatski: Idaho
Ido: Idaho
Igbo: Idaho
Ilokano: Idaho
বিষ্ণুপ্রিয়া মণিপুরী: আইডাহো
Bahasa Indonesia: Idaho
interlingua: Idaho
Interlingue: Idaho
ᐃᓄᒃᑎᑐᑦ/inuktitut: ᐄᑖᓲ
Iñupiak: Idaho
Ирон: Айдахо
isiXhosa: I-Ayidaho
isiZulu: Idaho
íslenska: Idaho
italiano: Idaho
עברית: איידהו
Jawa: Idaho
Kabɩyɛ: Idahoo
ಕನ್ನಡ: ಐಡಹೋ
Kapampangan: Idaho
къарачай-малкъар: Айдахо
ქართული: აიდაჰო
қазақша: Айдахо
kernowek: Idaho
Kiswahili: Idaho
Kreyòl ayisyen: Aydawo
kurdî: Idaho
кырык мары: Айдахо
Ladino: Idaho
لۊری شومالی: آیداھو
Latina: Idahum
latviešu: Aidaho
Lëtzebuergesch: Idaho
лезги: Айдагьо
lietuvių: Aidahas
Ligure: Idaho
Limburgs: Idaho
Lingua Franca Nova: Idaho
lumbaart: Idaho
magyar: Idaho
मैथिली: आयडाहो
македонски: Ајдахо
Malagasy: Idaho
മലയാളം: ഐഡഹോ
Māori: Idaho
मराठी: आयडाहो
მარგალური: აიდაჰო
مصرى: ايداهو
مازِرونی: آیداهو
Bahasa Melayu: Idaho
Mìng-dĕ̤ng-ngṳ̄: Idaho
монгол: Айдахо
Dorerin Naoero: Idaho
Nederlands: Idaho
Nedersaksies: Idaho
नेपाली: आयडाहो
नेपाल भाषा: आइदाहो
日本語: アイダホ州
нохчийн: Айдахо
Nordfriisk: Idaho
norsk: Idaho
norsk nynorsk: Idaho
occitan: Idaho
олык марий: Айдахо
oʻzbekcha/ўзбекча: Aydaho
ਪੰਜਾਬੀ: ਆਇਡਾਹੋ
पालि: आइडाहो
پنجابی: اڈاہو
Papiamentu: Idaho
Piemontèis: Idaho
Plattdüütsch: Idaho
polski: Idaho
português: Idaho
română: Idaho
rumantsch: Idaho
Runa Simi: Idaho suyu
русский: Айдахо
саха тыла: Айдахо
संस्कृतम्: ऐडहो
sardu: Idaho
Scots: Idaho
Seeltersk: Idaho
shqip: Idaho
sicilianu: Idaho
Simple English: Idaho
slovenčina: Idaho
slovenščina: Idaho
ślůnski: Idaho
کوردی: ئایداھۆ
српски / srpski: Ајдахо
srpskohrvatski / српскохрватски: Idaho
suomi: Idaho
svenska: Idaho
Tagalog: Idaho
தமிழ்: ஐடஹோ
татарча/tatarça: Айдаһо
తెలుగు: ఐడహొ
тоҷикӣ: Айдаҳо
Türkçe: Idaho
українська: Айдахо
اردو: ایڈاہو
ئۇيغۇرچە / Uyghurche: Aydaxo Shitati
Tiếng Việt: Idaho
Volapük: Idaho
文言: 愛達荷州
Winaray: Idaho
吴语: 爱达荷州
ייִדיש: איידעהא
Yorùbá: Idaho
粵語: 愛達荷州
Zazaki: Idaho
Zeêuws: Idaho
žemaitėška: Aidahs
中文: 爱达荷州