About area code 203: location, common spam callers, related area codes, and more. Includes 203 reverse phone lookup to identify spam callers.

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.

Jan 1, 2026 · Area Code 203 is located in Connecticut. It covers 46 cities, including Milford, Bridgeport, Stamford, New Haven, and Waterbury. It also covers 6 planning regions, including Western Ct …

1 day ago · 203 is an area code located in the state of Connecticut, US. The largest city it serves is Bridgeport. Find out where 203 area code zone from, which states, counties and cities it covers. Get …

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 203 area code covers the southwestern portion of Connecticut, including most of Fairfield County, all of New Haven County, and a small portion of Litchfield County.

Find 203 area code details including city, time zone, and map. Lookup area code 203 phone number, name, and location.

Area code 203 is located in Connecticut. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.

List of ZIP Codes in Area Code 203 ... List of Counties in Area Code 203 ... List of Major Cities/Towns in Area Code 203

Where is Area Code 203? Area code (203) is in the state of CT. Below, are the major cities in the area code (203).