Site Navigation Arizona Colorado Idaho Montana Nevada New Mexico Utah Wyoming If you are a first time home buyer and you're looking for the best neighborhoods around, look into a Denver MLS in Colorado. You may find that Colorado homes are some of the best homes in the country. You will find that Boulder homes are great to live in also.     Colorado Gateway @ RockyMountainRoads Sitemap to all pages covering the state of Colorado. Many thanks to David Wilson, Joe Lockhart, Kenyon Schuett, and Matthew Salek for accompanying us on these roadtrips through the Centennial State. Unless otherwise noted, all photographs taken by Alex Nitzman and Andy Field. Population Statistics State Population 4,301,261 Top County Populations Denver 554,636 Jefferson 527,056 El Paso 516,929 Arapahoe 487,967 Adams 363,857 Boulder 291,288 Larimer 251,494 Weld 180,936 Douglas 175,766 Top City Populations Denver 554,636 Colorado Springs 360,890 Aurora 276,393 Lakewood 144,126 Fort Collins 118,652 Arvada 102,153 Pueblo 102,121 Westminster 100,940 Boulder 94,673 Source: 2000 U.S. Census Data Other Statistics Capital: Denver Nickname: Centennial State Colorado has an average elevation of 6,800 feet above sea level Over 50 mountain peaks in Colorado are over 14,000 feet above sea level (referred to as the "fourteeners") Area: 104,093.57 square miles or 269,596 square kilometers, 8th largest Statehood: 38th state; admitted August 1, 1876 Total Interstate Mileage: 952.91 miles Highest Point: Mount Elbert (southwest of Leadville and east of Aspen) 14,433 Feet above Sea Level Highway Guides Denver Gateway Interstate 25 Interstate 70 Business Loop I-70 Business Loop I-70 (Grand Junction/Clifton) Interstate 76 Interstate 225 Interstate 270 U.S. Highway 6 U.S. Highway 24 U.S. Highway 34 U.S. Highway 36 U.S. Highway 40 U.S. Highway 50 - includes Royal Gorge Bridge U.S. Highway 85 U.S. Highway 138 U.S. Highway 285 U.S. Highway 385 Colorado 9 Colorado 35 Colorado 67 Colorado 74 Colorado 75 Colorado 83 Colorado 103 Colorado 115 Colorado 121 (Wadsworth Boulevard) Colorado 131 Colorado 470 E-470 Eagle/Grand County Route 1 (Trough Road) Peņa Boulevard Miscellaneous Colorado Page Updated February 5, 2006.