Idaho map and facts
Idaho, “the Gem State”, is a West state in the Mountain division. Its capital is Boise.
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Idaho in context
With 1,839,106 people counted in the 2020 Census, Idaho holds about 0.6% of the US population. Its 83,569 square miles make it the 14th-largest state by area, and with 22 people per square mile it ranks 44th for population density.
Idaho shares borders with Montana, Nevada, Oregon, Utah, Washington, Wyoming. Want to see how it measures up? Compare Idaho with Montana.
Idaho FAQ
What is the capital of Idaho?
The capital of Idaho is Boise. Boise is also the state's largest city.
What is the population of Idaho?
Idaho had 1,839,106 residents in the 2020 Census, ranking 38th of the 50 states.
How big is Idaho?
Idaho covers 83,569 square miles (216,443 km²) including water, making it the 14th-largest state.
When did Idaho become a state?
Idaho became the 43rd state on July 3, 1890.
What time zone is Idaho in?
Idaho is in the Mountain + Pacific (northern panhandle) time zones.
What states border Idaho?
Idaho borders 6 states: Montana, Nevada, Oregon, Utah, Washington, Wyoming.