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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).
Boulder is a home rule city in and the county seat of Boulder County, Colorado, United States. 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]
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:
Colorado Area Code Map. Try the Printable Colorado Area Code Map. Colorado currently utilizes 5 area codes. When first established by AT&T and the Bell System in 1947, 303 covered the entire state of Colorado. The most recently added was 983 in 2022 as an overlay to 303.
Get information about area code of Boulder County in Colorado. Also find all the counties located in Colorado through area codes map.
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.
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San Juan County (16), Hinsdale County (25), Mineral County (32), Jackson County (55), Kiowa County (59), and Cheyenne County (80) are among the 100 least populous counties of the United States. 3. Jefferson County borders ten adjacent counties, the most of any Colorado county. [k] 4.
