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List of Colorado area codes. Coordinates: 38.9972°N 105.5478°W. Clickable map of Colorado area codes in blue (with bordering states). [1] The U.S. state of Colorado is served by five telephone area codes of the North American Numbering Plan (NANP). Area code 303 is the original area code assigned to the entire state when the first nationwide ...
Area codes 303, 720 and 983 are telephone area codes in the North American Numbering Plan for the north-central portion of the U.S. state of Colorado. The numbering plan area comprises Denver and Boulder, as well as their surrounding suburbs, including Lakewood, Littleton, Longmont, Broomfield, Aurora, and Castle Rock.
With a population of 108,250 at the 2020 census, it is the most-populous city in the county and the 12th-most populous city in Colorado. Boulder is the principal city of the Boulder metropolitan statistical area, which had 330,758 residents in 2020, and is part of the Front Range Urban Corridor.
Sep 1, 2017 · Boulder, CO Area Codes: List, Map, and Phone Lookup. The city of Boulder is in the state of Colorado. It has the following active area codes:
Boulder, Colorado Area Code. Boulder, CO is officially utilizing an area code overlay in which area codes 303, 720 and 983 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
Get information about area code of Boulder County in Colorado. Also find all the counties located in Colorado through area codes map.
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Boulder County Colorado Area Codes. See the List of Counties by Area Codes for more information. Note that Area Codes often cross County lines. Also see the list of ZIP Codes sorted by Colorado County.
