Clickable map of Colorado area codes in blue (with bordering states).[1]
Area code 970 is a telephone area code in the North American Numbering Plan (NANP) for most of the western and northern parts of the U.S. state of Colorado. The numbering plan area includes Aspen, Breckenridge, Durango, Estes Park, Fort Collins, Glenwood Springs, Grand Junction, Greeley, Loveland, Silverthorne, Steamboat Springs, and Vail. It was established on April 2, 1995 in an area code split of area code 303, which was retained by the Denver area.[2]
Areacode970 is a telephone areacode in the North American Numbering Plan (NANP) for most of the western and northern parts of the U.S. state of Colorado...
southeastern Colorado. Areacode970 serves northern and western Colorado. Areacode 748 will be introduced to the northern and western areas of Colorado in 2026...
geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan areacodes (NPA codes, or areacodes), consisting of three digits...
Areacodes 617 and 857 are telephone areacodes in the North American Numbering Plan (NANP) for the U.S. state of Massachusetts, serving the city of Boston...
Areacodes 541 and 458 are telephone areacodes in the North American Numbering Plan (NANP) for most of the U.S. state of Oregon, excluding only the northwestern...
700, 711, 725, 811, 911, 950, 958, 959, 970, 976 List of North American Numbering Plan areacodes NANPA areacode map of Wyoming 43°00′N 107°30′W / 43...
Areacodes 304 and 681 are telephone areacodes in the North American Numbering Plan (NANP) for the entirety of the U.S. state of West Virginia. The numbering...
Areacode 928 is a telephone areacode in the North American Numbering Plan for the U.S. state of Arizona. The numbering plan area comprises the northern...
Areacode 719 is a telephone areacode in the North American Numbering Plan (NANP) for the U.S. state of Colorado. The numbering plan area (NPA) includes...
list of future areacodes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the...
Areacode 781 and 339 are telephone areacodes in the North American Numbering Plan for the U.S. state of Massachusetts. The numbering plan area consists...
Areacode 603 is the sole areacode for the U.S. state of New Hampshire in the North American Numbering Plan (NANP). It was created as one of the original...
Areacode 785 is a telephone areacode in the North American Numbering Plan for most of the northern part of the U.S. state Kansas. It was created in a...
Areacode 505 is a telephone areacode in the North American Numbering Plan (NANP) for the U.S. state of New Mexico. Its numbering plan area (NPA) comprises...
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