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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.
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.
Sep 1, 2017 · List of all area codes in Boulder, CO. Boulder, CO area code map, list, and phone lookup.
Colorado area code map, list, and phone lookup for all cities in Colorado.
Find the local area code for Boulder, Colorado. Our complete calling resource guide instantly gives you the the Boulder area code and local time to help you make your long distance call to Boulder, Colorado.
Area code lookup. Colorado is currently using 4 area codes. 303. Denver, Aurora, Lakewood, Thornton, Arvada, Westminster, Boulder, Longmont, Broomfield, Castle Rock. 719. Colorado Springs, Pueblo, Fountain, Canon City, Alamosa, Trinidad, Lamar, Woodland Park, La Junta, Monument. 720.
