Colorado Area Codes

Updated February 12, 2020 | Infoplease Staff
Area codes Selected cities
303, 720Denver, Boulder
719Colorado Springs, Pueblo
970Aspen, Fort Collins
Source: North American Numbering Plan Administration. Web: .

To find phone numbers, area code information, and area code maps, see our White Pages.

California Area CodesArea Codes: United States, Canada, CaribbeanConnecticut Area Codes
Area Codes: United States, Canada, Caribbean
Sources +