Where is area code 303? Area code 303 is located in central Colorado and covers Denver, Aurora, Lakewood, Thornton, Arvada, Westminster, and Centennial. It has 2 overlays (720 and 983) that …

[1] Area codes 303, 720, and 983 are telephone area codes in the North American Numbering Plan (NANP) for the north-central portion of the U.S. state of Colorado. The numbering plan area (NPA) …

About area code 303: location, common spam callers, related area codes, and more. Includes 303 reverse phone lookup to identify spam callers.

Browse area code 303 phone numbers, prefixes and exchanges. The 303 area code serves Denver, Englewood, Aurora, Westminster, Boulder, covering 67 ZIP codes in 14 counties.

Mar 9, 2025 · 303 is an area code located in the state of Colorado, US. The largest city it serves is Denver. Find out where 303 area code zone from, which states, counties and cities it covers. Get the …

Find 303 area code details including city, time zone, and map. Lookup area code 303 phone number, name, and location.

Area Code 303 Boundary Map List of ZIP Codes in Area Code 303 ... List of Counties in Area Code 303 ... List of Major Cities/Towns in Area Code 303

What Does Area Code 303 Mean? Area code 303 is located in central Colorado and covers Denver, Aurora, Lakewood, Thornton, Arvada, Westminster, and Centennial. It has a single overlay (720) that …

Dec 3, 2025 · Area code 303 is located in Colorado. Get area code location and dialing plans for all phone prefixes in area code 303.

Phone numbers with the 303 area code prefix originate from the north-central portion of Colorado. This region specifically comprises the metropolitan areas of Denver and Boulder, along with their …