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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, Colorado
Boulder is the principal city of the Boulder metropolitan...
- Boulder, 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. Boulder is located at the base of the foothills of the Rocky Mountains , at an elevation of 5,430 feet (1,655 m) above sea level.
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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.
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 is the county seat and most populous city of Boulder County and the 11th most populous city in the U.S. state of Colorado. Boulder is located at the base of the foothills of the Rocky Mountains at an elevation of 5,430 feet (1,655 m). The city is 25 miles (40 km) northwest of Denver.
