Wikipedia

Template:Colorado area codes image map

Area code 970Area codes 303, 720, and 983Area code 719Area code 785Area code 308Area code 307Area code 435Area code 928Area code 575Area code 505Area code 580Area code 620
Clickable map of Colorado area codes in blue (with bordering states).[1]
  1. ^ "Area Codes Map, Colorado". NANPA. Retrieved 2018-04-24.
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