Colorado is located in the Rocky Mountain region, or Southwestern region, of the United States. According to a recent census, an estimated 4.8 million people live in the state of Colorado. Most Coloradans live in the Front Range Urban Corridor, the eastern edge of the Rocky Mountains. It's most populous city is Denver, the capital of Colorado. Because half of Colorado's terrain is rugged, the state's weather varies throughout the year.
Colorado has access to several sources of energy. It hosts seven of the country's 100 largest natural gas fields and two of its 100 largest oil fields. There are large coal deposits throughout the state. Colorado's mountains and rivers provide wind power, geothermal power, and hydroelectric power. Most importantly, Colorado's oil shale deposits hold nearly as much oil as the entire world's oil reserves, over 1 trillion barrels of oil. The state of Colorado can be divided into 64 counties or seven metropolitan areas. The most populated city is Denver which is home to several cultural art institutions including the Ellie Caulkins Opera House and the Denver Art Museum. People living in Colorado have been known for their healthy lifestyle. Colorado has been known to have the lowest obesity rate in the country. The state promotes healthy and active lifestyles.