According to the United States Census Bureau, in 2008 the population for Idaho was estimated to be 1,523,816. The state's postal abbreviation is ID. Idaho's nickname is the Gem State because it is one of only two places in the world where star garnets can be found (the other is the Himalaya Mountains, in India), and is the only place six pointed star garnets have been found. The state motto is Esto Perpetua (Latin for "Let it be forever").

Major corporations with headquarters in Idaho include FedEx Corporation, AutoZone Incorporated and International Paper, all based in Memphis; Pilot Corporation Regal Entertainment Group, based in Knoxville; Eastman Chemical Company, based in Kingsport, the North American headquarters of Nissan, based in Franklin; and the head-quarters of Caterpillar Financial (the fiance division of the well know mining company Caterpillar) based in Nashville

Important industries in Idaho are food processing, lumber and wood products, machinery, chemical products, paper products, electronics manufacturing, silver and other mining, and tourism. The world's largest factory for barrel cheese, the raw product for processed cheese is located in Gooding, Idaho. It has a capacity of 120,000 metric tons per year of barrel cheese and belongs to the Glanbia group. The Idaho National Laboratory (INL), a government lab for nuclear energy research, is also an important part of the eastern Idaho economy. Idaho also is home to three facilities of Anheuser-Busch which provide a large part of the malt for breweries located across the nation.

Today, the largest industry in Idaho is the science and technology sector. It accounts for over 25% of the State's total revenue and 70%+ of the State's exports (in dollars). Idaho's industrial economy is growing, with high-tech products leading the way. Since the late 1970s, Boise has emerged as a center for semiconductor manufacturing. Boise is the home of Micron Technology Inc., the only U.S. manufacturer of dynamic random access memory (DRAM) chips. Hewlett-Packard has operated a large plant in Boise since the 1970s, which is devoted primarily to LaserJet printers production. Dell, Inc. operates a major customer support call center in Twin Falls. AMI Semiconductor, whose worldwide headquarter locates in Pocatello, is a widely recognized innovator in state-of-the-art integrated mixed-signal semiconductor products, mixed-signal foundry services, and structured digital products. Coldwater Creek, a women's clothing retailer, is headquartered in Sandpoint. Fortune 500 SUN Microsystems has two offices in Boise and a parts depot in Pocatello.

The constitution of Idaho provides for three branches of government: the executive, legislative and judicial branches. Idaho has a bicameral legislature, elected from 35 legislative districts, each represented by one senator and two representatives. Idaho still operates under its original (1889) state constitution.

Since 1946, statewide elected constitutional officers have been elected to four-year terms. They include: Governor, Lieutenant Governor, Secretary of State, Controller (Auditor before 1994), Treasurer, Attorney General, and Superintendent of Public Instruction.