AreaCodeLocations.info

Colorado Area Codes

The state of Colorado, USA is currently served by a total of 5 area codes:

Overlaying area codes

These Colorado area codes overlay (cover the same geographic area). The first code listed is the parent code. Overlay area codes are added when no more phone numbers are available in an existing Numbering Plan Area.

  • 303/720/983

Larger Colorado cities and their area codes

City CountyArea Codes
ArvadaJefferson303, 720, 983
AuroraAdams303, 720, 983
BoulderBoulder303, 720, 983
BrightonAdams303, 720, 983
BroomfieldBroomfield303, 720, 983
Castle RockDouglas303, 720, 983
Colorado SpringsEl Paso719
Commerce CityAdams303, 720, 983
DenverAdams303, 720, 983
EnglewoodArapahoe303, 720, 983
Fort CollinsLarimer970
FountainEl Paso719
Grand JunctionMesa970
GreeleyWeld970
Highlands RanchDouglas303, 720, 983
LafayetteBoulder303, 720, 983
LakewoodJefferson303, 720, 983
LittletonArapahoe303, 720, 983
LongmontBoulder303, 720, 983
LovelandLarimer970
ParkerDouglas303, 720, 983
PuebloPueblo719
ThorntonAdams303, 720, 983
WestminsterAdams303, 720, 983
Wheat RidgeJefferson303, 720, 983
WindsorWeld970
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