Idaho's state capital and largest city is Boise. With an area of 83,569 square miles (216,440 km2), Idaho is the 14th-largest state by land area. The state has a population of approximately two million people; it ranks as the 13th-least populous and the seventh-least densely populated of the 50 U.S. states.

Find Idaho services, resources, and information in one place. Explore government, business, education, outdoor activities, and tools to help you live and thrive here.

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Geographical and historical treatment of Idaho, including maps and a survey of its people, economy, and government. Idaho is shaped much like a logger’s boot, thereby accidentally reflecting the state’s rugged forested and mountainous terrain in which logging and mining play major roles.

The Boise metropolitan area, located in the Treasure Valley, includes five counties of Idaho with an estimated population of 846,000, the most populous metropolitan area in Idaho and 95th-most populous in the United States.

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Discover Idaho’s history, symbols, holidays, and natural wonders. Explore quick facts and family-friendly resources to learn what makes our state unique.

Idaho, also known as “The Gem State”, is a state located in the Western United States. It shares its northern border with Canada, its eastern border with Montana and Wyoming, its southern border with Utah and Nevada, and its western border with Washington and Oregon.

Idaho’s history lies with its native tribes, the Lewis and Clark Expedition and determined pioneers on the Oregon Trail. Today’s Idaho is both cosmopolitan and small-town friendly.

Some travelers mentioned the Old Idaho Penitentiary and the World Centre for Birds of Prey in Boise as interesting historic and cultural sites. Additionally, the Cataldo Mission near Coeur d'Alene, Idaho’s oldest building, is a recommended visit for those interested in history.