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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 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.
Area code Additional overlay codes Parent of area code splits Location 215 † ‡ 267, 445: Philadelphia and its immediately surrounding areas in the southeast corner of Pennsylvania 223: 717 ‡ 267: 215 ‡, 445: 272: 570 ‡ 412 † ‡ 878: Pittsburgh and its immediately surrounding areas in Allegheny County: 445: 215 ‡, 267: 484: 610 ...
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:
this was the first part of North America to have its code changed three times: from 213 to 714 1951: to 619 in 1982, and to 760 in 1997. was to have originally split off the portion of 760 serving San Diego County to a new 442 area code in late 2008/early 2009; that plan was cancelled. 2009: overlaid by 442. 761.
There are two lists that Wirefly provides for the area codes in Colorado. The first table below shows the most populated cities in Colorado with the area codes listed next to them. The next table shows the all the Colorado state area codes by number with the names of the city they are used in.
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Boulder: 303 and 720 Nestled against the Rocky Mountains, Boulder shares the 303 and 720 area codes with Denver. Known for its outdoor adventures, vibrant arts scene, and the University of Colorado, Boulder is a hub of innovation and culture.
