Idaho

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Idaho's state bird is the mountain bluebird.

Idaho's state flower is the syringa, or mock orange (Philadelphus lewisii).

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For Students

Idaho summary

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Idaho

state, United States

Also known as: Gem State

Written by Boyd A. Martin, Gregory Lewis McNamee•All

Fact-checked by The Editors of Encyclopaedia Britannica

Last Updated: May 1, 2025 • Article History

News •

'Hetero Awesome Fest' planned for Idaho capitol during LGBTQ Pride Month • Apr. 30, 2025, 5:27 AM ET (NBC)

Federal judge says Idaho must let execution witnesses watch as lethal drugs are prepped and pushed • Apr. 29, 2025, 12:32 PM ET (ABC News (U.S.))

Correction: Lori Vallow Daybell-Arizona story • Apr. 25, 2025, 1:59 PM ET (AP)

Jury begins deliberating in Lori Vallow Daybell's trial on charge she conspired to kill her husband • Apr. 21, 2025, 7:59 PM ET (AP)

Judge to allow 'bushy eyebrows' testimony in Bryan Kohberger's quadruple murder trial • Apr. 18, 2025, 5:31 PM ET (AP)

Idaho, constituent state of the United States of America. It ranks 14th among the 50 U.S. states in terms of total area. Its boundaries—with the Canadian province of British Columbia to the north and the U.S. states of Montana and Wyoming to the east, Utah and Nevada to the south, and Oregon and Washington to the west—are both historical and geographic in derivation. The boundary with British Columbia follows the 49th parallel of north latitude, while the border with Utah and Nevada follows the 42nd parallel; both lines were established by treaty—the northern between the United States and Britain in ...(100 of 4473 words)

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