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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.
Clickable map of Colorado area codes in blue (with bordering states). 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 telephone numbering plan was created in 1947.
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Area code 303 was one of the original North American area codesof 1947, and originally served the entire state of Colorado. It remained the state's sole area code for 40 years. Colorado's explosive growth in the second half of the 20th century, particularly in the Denver/Boulder area, made it a certainty that Colorado would need another area code. ...
The numbering plan area is one of the largest toll-free calling zones in the western United States.[citation needed] With the exception of Roggen, Brighton, and Wiggins,[failed verification]no long-distance charges are levied for any calls made from one telephone to another in the area.
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. Categories: city in the United States, county seat, college town, big city and locality. Location: Boulder, Front Range, Colorado, Rocky Mountains, United States, North America. View on OpenStreetMap. Latitude. 40.015° or 40° 0' 54" north. Longitude.
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. In addition to Boulder, CO area code information read more about area codes 303, 720, 983 details and Colorado area codes.
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Maps. The City of Boulder has an enterprise Geographic Information System (GIS) shared by all city departments. The centralized data repository allows each department to maintain mapping information particular to their business and share that information with all other departments and the community.
