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Area code 203 serves the state of Connecticut. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 203 is a General Purpose Code. 203 service area does overlap with 475 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.
Area codes 203 and 475 are telephone area codes in the North American Numbering Plan (NANP) for the southwestern part of the U.S. state of Connecticut. The numbering plan area (NPA) is mostly coextensive with the Connecticut portion of the New York metropolitan area, and comprises most of Fairfield County, all of New Haven County, and a small ...
Browse area code 203 phone numbers, prefixes and exchanges. The 203 area code serves Wallingford, Stamford, Hartford, Middletown, New Haven, covering 60 ZIP codes in 7 counties.
203 is an area code located in the state of Connecticut, US. The largest city it serves is Bridgeport. Location, time zone and map of the 203 area code
203 Area Code located in Connecticut, including 46 cities, 3 counties, 1 time zone, map, Census demographics, and 775 active prefixes.
The 203 Area Code is located in the state of Connecticut. Area Code 203 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 7,769,283 unique phone numbers and 1,508,552 individuals near the cities of New Haven, Stamford, and Bridgeport.
Area code 203 is located in southwestern Connecticut and covers Bridgeport, New Haven, Stamford, Waterbury, and Norwalk. It has a single overlay (475) that serves the same area.