Search results
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.
Clickable map of Colorado area codes in blue (with bordering states). 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.
Colorado Area Code Map. Try the Printable Colorado Area Code Map. Colorado currently utilizes 5 area codes. When first established by AT&T and the Bell System in 1947, 303 covered the entire state of Colorado. The most recently added was 983 in 2022 as an overlay to 303.
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, Colorado Area Code. 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.
Find out how many area codes in Colorado including largest cities/towns covered. Copyright © 2005 - 2024 24TimeZones.com. All rights reserved.
People also ask
What area code is Boulder CO?
What area codes are in Colorado?
What area code did not border another state?
What area code is 720?
Lookup area code information for BOULDER, CO. Get the NPA NXX (area code and prefix) as well as much more data for BOULDER, CO.
