The largest ancestry groups in the state are 26.0% English and 11.9% German. In comparison to all the U.S. states and territories, Utah, with a population of just over three million, is the 13th-largest by area, the 30th-most populous, and the 11th-least densely populated. St. George was the fastest-growing metropolitan area in the United States from 2000 to 2005. Salt Lake City is the capital and the largest city in the state. Utah is home to five national parks, including Zion, Bryce Canyon, and Arches. The Great Salt Lake is the largest saltwater lake in the Western Hemisphere. Tourism, mining, and a growing technology sector known as the Silicon Slopes drive the state's economy. Most of Utah has a semi-arid to desert climate, with hot summers and snowy winters in the mountains.