Colorado Phone Numbers
-
The 303 area code serves Colorado, the majority of the Denver metro area, and the mountain region of the state.
-
719 is a CO area code covering Pueblo, The San Luis Valley, & S. E. Colorado Springs.
-
The 720 area code serves Denver, Boulder and other cities, towns and unincorporated areas of Colorado. It was created in 1998 and overlays 303 and 303 area codes.
-
970 is the area code for Colorado's western slope, including cities such as Grand Junction and Durango.
-
983 is an area code in Colorado. It includes parts of Larimer, Weld, and Boulder Counties.