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.

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

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.

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, 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.

State of Idaho information and resource links to the 43rd State of the Union homepage, symbols, flags, maps, birds, flowers, motto, tree and more

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.

The two-lane US 95 and Idaho State Highway 55 serve as the only intrastate connections between North Idaho and the rest of the state. Even in ideal weather conditions, traveling by car from North Idaho to Eastern Idaho invariably involves a drive through Boise or through Missoula, Montana.

University of Idaho’s statewide footprint opens doors to discovery and opportunity. As Idaho’s first and only Carnegie R1 research university, you can choose from more than 200 areas of study and gain hands-on experience that puts learning into action.