203 Area Code 🌍☎️

The most populous cities in area code 203 are: New Haven, Stamford, Bridgeport, Norwalk, and Waterbury.

Other cities in the 203 area code include: Danbury, Greenwich, Meriden, Fairfield, Wallingford, Shelton, Milford, Trumbull, Darien, Westport, Derby, Hamden, West Haven, Old Greenwich, Cheshire, Branford, Wilton, Guilford, Madison, New Canaan, Naugatuck, Redding, Ansonia, Ridgefield, Seymour, Newtown, Wolcott, East Haven, Southbury, Woodbury, New Fairfield, Prospect, Northford, and Bethany.

New Haven, in the U.S. state of Connecticut, is the principal municipality in Greater New Haven, which had a total population of 862,477 in 2010. It is located on New Haven Harbor on the northern shore of Long Island Sound in New Haven County, Connecticut, and is part of the New York metropolitan area. It is the second-largest city in Connecticut (after Bridgeport), with a population of 129,779 people as of the 2010 United States Census. According to a census of 1 July 2012, by the Census Bureau, the city had a population of 130,741.New Haven was founded in 1638 by English Puritans, and a year later eight streets were laid out in a four-by-four grid, creating what is commonly known as the "Nine Square Plan". The central common block is the New Haven Green, a 16-acre (6 ha) square, and the center of Downtown New Haven. The Green is now a National Historic Landmark and the "Nine Square Plan" is recognized by the American Planning Association as a National Planning Landmark. New Haven is the home of Yale University. The university is an integral part of the city's economy, being New Haven's biggest taxpayer and employer. Health care (hospitals and biotechnology), professional services (legal, architectural, marketing, and engineering), financial services, and retail trade also help to form an economic base for the city.The city served as co-capital of Connecticut from 1701 until 1873, when sole governance was transferred to the more centrally located city of Hartford. New Haven has since billed itself as the "Cultural Capital of Connecticut" for its supply of established theaters, museums, and music venues. New Haven is also the birthplace of George W. Bush, the 43rd President of the United States.New Haven had the first public tree planting program in America, producing a canopy of mature trees (including some large elms) that gave New Haven the nickname "The Elm City".

Stamford is a city in Fairfield County, Connecticut, United States. According to the 2010 census, the population of the city is 122,643. As of July 1, 2014, according to the Census Bureau, the population of Stamford had risen to 128,278, making it the third-largest city in the state and the seventh-largest city in New England. Approximately 30 miles (50 kilometers) from Manhattan, Stamford is in the Bridgeport-Stamford-Norwalk Metro area which is a part of the Greater New York metropolitan area.Stamford is home to four Fortune 500 Companies, nine Fortune 1000 Companies, and 13 Courant 100 Companies, as well as numerous divisions of large corporations. This gives Stamford the largest financial district in New York Metro outside New York City itself and one of the largest concentrations of corporations in the nation. Stamford is also home to the Stamford Waterside Design District - a creative neighborhood and shopping destination dedicated to Interior Design and Architecture.

The 203 area code lies within the Eastern Daylight Time Zone (or EDT). The current time in Eastern Daylight Time is 01:45 PM on Apr 26, 2025.

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