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Area code 303 is the original area code, while area codes 720 and 983 were added (in 1998 and 2022 respectively) to form an overlay complex for the area, meaning that the same geographic service area is served by all area codes and that ten-digit dialing is required for all calls made within the service area.
Location of the Sierra Ridge CDP in the State of Colorado. ... Area codes: 303 & 720: GNIS feature ID: ... The unincorporated community lies in ZIP Code 80134. [4]
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.
Location of the Echo Hills CDP in the State of Colorado. ... Area codes: 303 & 720: ... CO Metropolitan Statistical Area. The Evergreen post office (Zip Code 80439) ...
To find out the 25 poorest and richest area codes, GOBankingRates used the 2015 Census Community Survey, the most recent data available, to rank cities across the nation in order of mean household ...
Location of the Hidden Lake CDP in Boulder County, ... ZIP Code [4] Ward post office (Zip Code 80481. Area codes: 303 & 720: GNIS feature ID: 2583245 [1]
Location of the Holly Hills CDP in Arapahoe County, ... ZIP Code [4] Denver 80222. Area codes: 303 & 720: GNIS feature [2]
Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.