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Colorado

Area Codes

Area Codes: 4
Timezone: America/Denver
Current Time: 8:41 PM
Area Code Cities
303 Denver, Aurora, Fort Collins, Lakewood, Boulder, Arvada, Westminster, Centennial, Longmont, Broomfield, Castle Rock, Parker, Littleton, Brighton, Northglenn, Englewood, Erie, Louisville, Golden, Greenwood Village, Frederick, Evergreen, Niwot, Strasburg, Bennett, Hudson, Lyons, Idaho Springs, Elizabeth, Nederland, Byers, Keenesburg, Georgetown, Central City, Kiowa, Allenspark, Morrison, Larkspur, Elbert, Ward, Table Mesa, Coal Creek Canyon, Deckers, Bailey, Roggen
719 Denver, Colorado Springs, Lakewood, Pueblo, Fountain, Cañon City, Woodland Park, Alamosa, Trinidad, Monument, La Junta, Salida, Lamar, Florence, Air Force Academy, Leadville, Manitou Springs, Buena Vista, Monte Vista, Rocky Ford, Las Animas, Burlington, Penrose, Walsenburg, Colorado City, Center, Limon, Del Norte, Springfield, Cripple Creek, Fowler, Ordway, Manassa, Howard, Calhan, Cheyenne Wells, La Jara, La Veta, Fairplay, Hugo, Holly, Antonito, Green Mountain Falls, Avondale, San Luis, Simla, Stratton, Westcliffe, Walsh, Saguache, Aguilar, South Fork, Manzanola, Blanca, Wiley, Cheraw, Campo, Sheridan Lake, Branson, Kim, Two Buttes, Weston, Peyton, Guffey, Mosca, Brewster, Guymon, Rush, Beulah, Manter, Creede, El Paso, Bristol-granada, Gardner, Lake George, Agate
720 Denver, Aurora, Fort Collins, Lakewood, Boulder, Arvada, Westminster, Centennial, Longmont, Broomfield, Castle Rock, Parker, Littleton, Brighton, Northglenn, Englewood, Windsor, Louisville, Golden, Durango, Strasburg, Table Mesa, Bailey
970 Denver, Colorado Springs, Aurora, Fort Collins, Lakewood, Grand Junction, Greeley, Centennial, Loveland, Englewood, Windsor, Montrose, Johnstown, Clifton, Durango, Sterling, Steamboat Springs, Fruita, Fort Morgan, Glenwood Springs, Rifle, Wellington, Craig, Edwards, Basalt, Berthoud, Delta, Cortez, Aspen, Breckenridge, Estes Park, Carbondale, Gypsum, Gunnison, Eagle, Avon, New Castle, Vail, Pagosa Springs, Eaton, Brush, Mead, Cedaredge, Yuma, Silt, Frisco, Bayfield, Fraser, Bennett, Platteville, Palisade, Telluride, Wray, La Salle, Rangely, Meeker, Holyoke, Granby, Hayden, Ault, Olathe, Crested Butte, Akron, Kremmling, Paonia, Mancos, Wiggins, Julesburg, Minturn, Parachute, Gilcrest, Ouray, Dillon, Oak Creek, Hotchkiss, Ignacio, Haxtun, Hot Sulphur Springs, Nucla, Collbran, Silverton, Dove Creek, Walden, Norwood, Copper Mountain, Mountain View, De Beque, Grand Lake, Otis, Nunn, Yampa, Crawford, Fleming, Lake City, Red Feather Lakes, Ovid, Hillrose, Peetz, Rico, Weldona, Crook, Joes, McCoy, Maybell, Willard, Sidney, Mesa, Laramie, Venango, Casper, Pleasant View, Mesa Verde National, Baggs, Marvel, Ridgeway, Cheyenne, Stoneham, Grand Island, Eckert, Allison, Big Springs, Snowmass, Somerset