Boulder Boulder, Colorado, is located just 30 minutes northwest of Denver, exactly where the plains meet the Rocky Mountains. The town was founded in 1859 by explorers seeking the riches of gold, and Boulder's history only got more colorful from there. Today, visitors can enjoy the benefits of a community created by residents that embrace a healthy, culturally-enriched lifestyle. Whether you are an outdoor enthusiast, seeking intellectual stimulation or want a relaxing getaway, Boulder offers a variety of experiences for every type of travel. Catch a glimpse of some of Boulder's furry and feathery residents while strolling, hiking or biking through our 300 miles of trails and 45,000 acres of open space, people-watch at an outdoor café or restaurant on Pearl Street, visit one of our many national laboratories, or check out a top attraction like Celestial Seasonings tea factory or the Boulder Dushanbe Teahouse. The City of Boulder sits 5,430 feet above sea level, and Boulder enjoys 300 plus days of sunshine a year and moderate weather. Last we checked, there were 103,166 residents in Boulder, including about 30,000 students who are enrolled at the University of Colorado at Boulder.