Denver, Colorado
Located on the plains just east of the Rocky Mountains, Denver is both the capital and the largest city in Colorado. According to a 2005 estimate, the city itself has population of 579,744, while the Denver-Aurora metropolitan area is home to about 2,830,000 inhabitants.
Colorado Springs, Colorado
With a population of 360,890, Colorado Springs is a mid-sized city located in the moutains of central Colorado. It is the county seat of El Paso County in that state.
Boulder, Colorado
Boulder is a small city of about 95,000 people, located in Boulder County, Colorado. It is situated just 35 miles (50 km) northwest of state capital, Denver.