There's a reason Idaho is known for its potatoes. Agriculture is a huge economic driver in the state, and this industry was the single largest driver of the state's economic output in 2013.

Overall, Idaho's economy grew 4.1% in 2013 -- making it the fifth fastest-growing state in the country.

Not only is Idaho the nation's top potato producer, it's a major producer -- and exporter -- of barley, alfalfa, wheat, corn, sugar beets, cheese, milk, livestock and trout. Economic activity in the agriculture industry alone increased 15% last year, likely helped in part by higher prices of commodities like corn during the year.

Another booming industry in the state: mining. While it's smaller than the agricultural sector, economic output from mining surged more than 35% in 2013. Silver, lead, zinc and gold are all mined in Idaho, and phosphate mining (which is used in fertilizers) is also big.