Idaho

Idaho is a state of rugged mountains, volcanic plains, and deep river canyons, home to about 1.9 million people across 83,569 square miles — the 13th-largest state by area but only the 38th most populous. Boise is the capital and by far the largest city, anchoring the Treasure Valley, one of the fastest-growing metro areas in the country over the past decade. Idaho carries the nickname "The Gem State," a reference to its extraordinary mineral wealth, including the star garnet, found in significant quantity only in Idaho and India.

Idaho's geography is dominated by mountains across the north and central portions of the state, while the Snake River Plain — a crescent-shaped basalt plain formed by hotspot volcanic activity over 15 million years — arcs across the south. Hells Canyon, on the Idaho-Oregon border, is the deepest river gorge in North America at 7,993 feet, deeper even than the Grand Canyon, and the Frank Church-River of No Return Wilderness is the largest wilderness area in the lower 48 states at 2.4 million acres.

Idaho's economy has diversified rapidly beyond its agricultural roots. Micron Technology, headquartered in Boise, is one of the only US companies operating at global scale in semiconductor manufacturing, and the state produces roughly 30% of the entire US potato supply thanks to the Snake River Plain's volcanic soil and abundant irrigation water. Population growth driven by in-migration from higher-cost West Coast states has made Idaho's economy one of the fastest-growing in the country.

Idaho's mountains are among the most remote and least-visited significant summits in the lower 48. Borah Peak (12,662 ft), the state's highest point in the Lost River Range, was the epicenter of the 1983 Borah Peak earthquake — magnitude 6.9, the largest in Idaho's recorded history — and its fault scarp remains visible at the mountain's base today. The Sawtooth Range, centered on Thompson Peak (10,751 ft), holds jagged granite spires young enough that they haven't been rounded by glaciation the way older ranges have, and the Sawtooth Wilderness alone contains over 300 alpine lakes.

Hells Canyon and the Snake River Plain

Hells Canyon, the deepest river gorge in North America at 7,993 feet from rim to river, is accessible by jetboat from Lewiston or by four-wheel-drive roads near Riggins, with the Seven Devils Mountains rising above 9,000 feet on the Idaho side. On the Snake River Plain, Shoshone Falls near Twin Falls drops 212 feet — 36 feet taller than Niagara — earning it the nickname "Niagara of the West," and Craters of the Moon National Monument preserves one of the most extensive lava fields in the continental US, a volcanic landscape so little-changed since its last eruptions 2,000 years ago that NASA used it to train Apollo astronauts in volcanic geology.

Lakes and Hot Springs

Idaho's northern panhandle holds Lake Pend Oreille, one of the deepest lakes in the US at 1,158 feet — so deep the Navy has used it since 1942 as a submarine acoustic test facility — and Lake Coeur d'Alene, 25 miles long with extraordinary water clarity. Redfish Lake in the Sawtooth NRA, backed directly by the range's jagged granite spires, is one of the most photographed lakes in the Rocky Mountains, and Idaho holds more natural hot springs than any state in the continental US except possibly Nevada, from riverside pools at Kirkham Hot Springs to the hike-in cascade terraces at Goldbug Hot Springs.

Idaho's population is increasingly concentrated in the Treasure Valley, which has been one of the fastest-growing metro areas in the US for more than a decade.

Boise and the Treasure Valley

Boise has transformed from a regional agricultural and government center into a genuine technology hub, home to Micron Technology's massive campus and a growing cluster of fintech and software companies. The city holds the largest per-capita Basque population in the US, descended from 19th-century sheepherders, and its Basque Block downtown reflects that unusual cultural identity. Meridian, Boise's fastest-growing suburb, expanded from 35,000 residents in 2000 to 130,000 by the mid-2020s, entirely on the back of Treasure Valley development.

Idaho Falls and Coeur d'Alene

Idaho Falls serves as the commercial and medical center for eastern Idaho and the gateway to Yellowstone's west entrance, its economy anchored by the Idaho National Laboratory, the primary federal nuclear energy research facility, which employs more than 6,000 scientists and engineers. Coeur d'Alene, northern Idaho's largest city, has shifted from a historic silver-mining economy to one built on tourism, real estate, and healthcare, drawing heavily on its lakefront resort identity and proximity to Spokane.

The Economy

Technology and agriculture form Idaho's two strongest economic pillars: Micron's semiconductor manufacturing anchors the tech sector, while the Snake River Plain's volcanic soil and irrigation systems make Idaho the top potato-producing state in the country, alongside a trout aquaculture industry that produces roughly 75% of the nation's commercial trout. Mining remains historically significant too — the Coeur d'Alene Mining District's Silver Valley was once one of the world's great silver-mining districts, and it's currently drawing renewed federal interest for cobalt deposits critical to EV battery production.

The University of Idaho in Moscow, the state's flagship land-grant institution founded the same year as statehood in 1889, is particularly strong in natural resources, forestry, agriculture, and law, and hosts the Lionel Hampton Jazz Festival, one of the nation's most significant collegiate jazz events. Boise State University, Idaho's largest university by enrollment, has grown rapidly alongside the Treasure Valley's population boom, with particular strength in business and expanding health-sciences partnerships with local hospital systems. Idaho State University in Pocatello is home to the state's only pharmacy school, and the College of Idaho in Caldwell, the oldest college in the state at founding in 1891, is a selective private liberal arts institution that sends an unusually high share of graduates to medical and law school.

At the high school level, Boise High School, founded in 1901 and the oldest public high school in the state, is consistently among Idaho's strongest academic public schools thanks to extensive AP and IB offerings and its downtown proximity to state government and the University of Idaho College of Law. Coeur d'Alene High School has benefited academically from in-migration of professional families from the Seattle area, and Wood River High School in the affluent Sun Valley/Ketchum area sends an unusually high percentage of its small graduating classes to selective universities.

Idaho's visitor identity centers on mountain scenery, volcanic landscapes, and one of America's original ski resort towns.

Sun Valley and the Sawtooths

Sun Valley, America's first destination ski resort since opening in 1936, remains one of the finest — Bald Mountain offers 3,400 vertical feet of sustained runs, and the adjacent town of Ketchum, where Ernest Hemingway lived from 1939 until his death in 1961, hosts an acclaimed summer orchestral festival each August. The Sawtooth Scenic Byway (ID-75) from Twin Falls through Sun Valley to Stanley is Idaho's most celebrated drive, cresting at Galena Summit for the single most dramatic mountain view in the state.

Craters of the Moon and Hells Canyon

Craters of the Moon National Monument's lava tube caves and cinder cone hikes create an alien landscape that engages visitors of every age, and its remoteness means genuinely no crowds. Hells Canyon National Recreation Area, the deepest gorge in North America, is best experienced either by jetboat from Lewiston or from Heavens Gate Lookout, where the view down 7,000 feet to the Snake River makes the canyon's scale finally comprehensible.

Family Weekends and Historic Towns

Coeur d'Alene combines lake beach access with proximity to Silverwood, the largest theme park in the Pacific Northwest, making it Idaho's top family destination, and the Discovery Center of Idaho in Boise pairs well with the city's Julia Davis Park complex for a full family day. Wallace, a remarkably preserved 1890s silver-mining town that once declared itself the literal "center of the universe," offers the richest historic-town experience in the state, and Stanley, a town of roughly 100 people sitting at 6,243 feet surrounded by the Sawtooth Range on three sides, is one of the most dramatically situated small towns anywhere in the Rockies.