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Area code 303 is the original area code assigned to the entire state when the first nationwide telephone numbering plan was created in 1947. Today it only serves the greater Denver Metropolitan Area. Area codes 720 and 983 are overlay codes for today's 303 numbering plan area (NPA). Area code 719 serves Colorado Springs and southeastern Colorado.
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 .
The map to the right is now clickable; click on an area code to go to the page for that code, or use the text links below. Map of Colorado area codes in blue (with border states) Pages in category "Area codes in Colorado"
2023: returned to the pool of area codes available for future area code relief; 457: Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025 [3] to be overlaid on 318; previously a fictitious area code assigned to identify Naked DSL/Dry Loop and dedicated data lines in ...
It was created in a split of area code 303 on March 5, 1988. [2] While 303 had been Colorado's sole area code for 40 years, the state's explosive growth in the second half of the 20th century made it apparent that the state would need another area code. 719 was split off when an impending number shortage meant the split could no longer be ...
To SH 21 (Powers Boulevard) / Interquest Parkway – Black Forest: 155: Voyager Parkway: Future northern terminus for SH 21/Powers Blvd. Temporarily signed for Voyager Parkway [20] Air Force Academy: 155.930: 250.945: 156: North Gate Boulevard – North Entrance Air Force Academy 158.199: 254.597: 158: Baptist Road: Monument: 160.763: 258.723: 161
SH 21 currently extends from SH 16 (Mesa Ridge Parkway) in Fountain at its southern end to Interquest Parkway/SH 83 in the north side of Colorado Springs. Extensions to I-25 near North Gate Boulevard are in progress, and extensions south to I-25 near Pikes Peak International Raceway are proposed, and the road is planned to be converted to a ...
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 ...