The vast majority of Idaho's population lives in the Snake River Plain, a valley running from across the entirety of southern Idaho from east to west. The valley contains the major cities of Boise, Meridian, Nampa, Caldwell, Twin Falls, Idaho Falls, and Pocatello.

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

From scenic parks to dreamy natural hot springs and quintessential cities and towns, the must-visit places in Idaho are abundant.

Idaho is a Rocky Mountain state with abundant natural resources and scenic areas. The state has snow-capped mountain ranges, rapids, vast lakes and steep canyons.

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.

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.

Idaho became a state in 1890, and it is the 11th largest state in land area, and the 14th largest in total area (land and water). Despite this, the population of Idaho was only 1,839,106 in 2020, making it ranked the 38th largest state by population.

Discover Idaho in bloom. Hike scenic trails, chase waterfalls and explore wildflower-covered landscapes. Plan your spring adventure with expert travel tips.

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

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.