Colorado Area Codes

Colorado Area Code Map

Each of the 4 area codes in Colorado are listed below. The area code listing below lists area codes in several sections. First, Colorado area codes by city are shown for the largest cities. Next, the list shows Colorado area codes by number. If you still can't find what you are looking for and the searches below do not help, the area code finder on our home page may be what you are looking for.

Area Codes for the Largest Cities in Colorado

• Arvada 303/720
• Aurora 303/720
• Boulder 303/720
• Brighton 303/720
• Broomfield 720/303
• Castle Rock 720/303
• Castlewood 720/303
• Colorado Springs 719
• Columbine 303/720
• Commerce City 303/720
• Denver 303/720
• Englewood 303/720
• Fort Collins 970
• Grand Junction 970
• Greeley 970
• Highlands Ranch 303/720
• Ken Caryl 720/303
• Lafayette 720/303
• Lakewood 720/303
• Littleton 303/720
• Longmont 303/720
• Loveland 303/720/970
• Northglenn 303/720
• Parker 303/720
• Pueblo 719
• Security-widefield 719
• Southglenn 720/303
• Thornton 720/303
• Westminster 720/303
• Wheat Ridge 303/720

Colorado Area Code List