North American Numbers
State · 6 area codes
Colorado area codes
Colorado has six area codes, with metro Denver on a 303/720/983 overlay plus 719 (Colorado Springs) and 970/748 for northern and western Colorado.
A · Metros
Major metro areas
Denver Colorado Springs Fort Collins Aurora
B · Directory
All Colorado area codes
Every code opens its profile — codes with a full write-up show their place; the rest show live numbering data while their detailed profile is added.
Sources
Wikipedia ↗
List of Colorado area codes (secondary)
Compiled by North American Numbers, last checked 2026-09-19. How this is made.