Idaho is a state in the Pacific Northwest region of the United States of America. The state's largest city, and capital, is Boise. Residents are called "Idahoans." Idaho was admitted to the Union on July 3, 1890, as the 43rd state.

According to the United States Census Bureau, in 2004, Idaho had an estimated population of 1,393,262. The state's postal abbreviation is ID. Idaho is nicknamed the Gem State because of its abundance of natural resources. The state motto is Esto Perpetua (Latin for "Let it be perpetual").