Colorado Area Codes, All Area Codes in Colorado
Colorado has area codes of 303, 719, 720, 970.
| Area Codes | Major Cities |
|---|---|
| 303 Area Code | Major cities covered by 303 area code ArvadaAuroraBlack HawkBoulderBrightonBroomfieldCastle PinesCentennialCentral CityCherry Hills VillageCommerce CityDaconoDenverEdgewaterEnglewoodFederal HeightsFort LuptonGlendaleGoldenGreenwood VillageIdaho SpringsLafayetteLakewoodLittletonLone TreeLongmontLouisvilleNorthglennSheridanThorntonWestminsterWheat Ridge |
| 719 Area Code | Major cities covered by 719 area code |
| 720 Area Code | Major cities covered by 720 area code |
| 970 Area Code | Major cities covered by 970 area code |