Colorado Area Codes

There are 4 area codes in Colorado which are used in 240 cities.

The most voted phone reputation in Colorado is Telemarketer

Colorado Highlights
Country US
# Area Codes 4
Carriers serving 98
# Reputation reports 5

Featured locations/area codes in Colorado:

Last 5 phones reported in CO

720-451-9000 (Debt Collector), 970-555-8237 (Phishing), 719-242-3654 (Other Spam), 303-238-5263 (Non Profit), 719-426-2972 (Vacation Scam)

CO Area Code List


Area CodeCities (top 40)
303Golden, Aurora, Brighton, Denver, Thornton, Louisville, Englewood, Longmont, Littleton, Evergreen, Lone Tree, Arvada, Fort Lupton, Lyons, Bennett, Strasburg, Hudson, Sedalia, Pine, Keenesburg, Idaho Springs, Byers, Deer Trail, Roggen, Orchard, Allenspark... more
719Colorado Springs, Pueblo, Canon City, Fountain, Peyton, Alamosa, Trinidad, Woodland Park, Florence, La Junta, Salida, Lamar, Monte Vista, Leadville, Buena Vista, Usaf Academy, Rocky Ford, Calhan, Manitou Springs, Burlington, Las Animas, Walsenburg, Elbert, Westcliffe, Penrose, Limon, Center, Del Norte, La Jara, Ordway, Antonito, Cripple Creek, Springfield, Fairplay, Cascade, Fowler, Holly, Sanford, Rye, Moffat... more
720Longmont, Aurora, Thornton, Englewood, Littleton, Evergreen, Denver, Lone Tree, Golden, Arvada, Brighton, Fort Lupton, Henderson, Lyons, Black Hawk, Hudson, Sedalia, Keenesburg, Idaho Springs, Deer Trail, Jamestown, Allenspark, Adams, Arapahoe... more
970Greeley, Loveland, Fort Collins, Montrose, Windsor, Sterling, Evans, Steamboat Springs, Carbondale, Fort Morgan, Grand Junction, Glenwood Springs, Fruita, Cortez, Delta, Rifle, Craig, Johnstown, Pagosa Springs, Breckenridge, Edwards, Aspen, Berthoud, Gunnison, Estes Park, Silverthorne, Wellington, Gypsum, Durango, Eaton, Bayfield, Brush, Dillon, New Castle, Parachute, Vail, Ignacio, Basalt, Palisade, Milliken... more