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  1. 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).

  2. Clickable map of Colorado area codes in blue (with bordering states). 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.

  3. Clickable map of Colorado area codes in blue (with bordering states). [1] ^ "Area Codes Map, Colorado". NANPA. Retrieved 2018-04-24. Categories: Area code templates. Colorado templates. Wikipedia image maps.

  4. Website. bouldercolorado .gov. Boulder is a home rule city in and the county seat of Boulder County, Colorado, United States. [1] 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. [6] Boulder is the principal city of the Boulder metropolitan statistical area ...

  5. Sep 1, 2017 · List of all area codes in Boulder, CO. Boulder, CO area code map, list, and phone lookup.

  6. 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.

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  8. 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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