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.

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 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.

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.

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

Idaho is a dream destination for the outdoors, home to the largest designated wilderness in the lower 48 states. Explore Hells Canyon, the deepest river gorge in North America, then roam parks and preserves filled with spectacular waterfalls, ancient lava flows, cinematic sand dunes, sparkling lakes and towering mountains.

Things to Do in Idaho, United States: See Tripadvisor's 371,341 traveler reviews and photos of Idaho tourist attractions. Find what to do today, this weekend, or in October. We have reviews of the best places to see in Idaho. Visit top-rated & must-see attractions.

Today’s Idaho is both cosmopolitan and small-town friendly. Boise, the capital and largest city, developed near Fort Boise along the Oregon Trail has grown to a population of 190,000. Agriculture, manufacturing and tourism are Idaho’s major industries.