Bridgeport, Connecticut

Where Is Area Code 203?

Area code 203 is in southwestern Connecticut. It serves the part of the state that includes Bridgeport, New Haven, Stamford, Norwalk, Waterbury, and Greenwich. This area is along Long Island Sound and near the New York state line.

Area code 203 covers most of Fairfield County and New Haven County, plus part of Litchfield County. Communities in the 203 region include Danbury, Milford, West Haven, Meriden, Naugatuck, and Shelton. Bridgeport is one of the largest cities in the area code.

The 203 region includes major Connecticut landmarks and transportation corridors. Yale University is in New Haven, and the city sits on New Haven Harbor along Long Island Sound. The area also includes coastal cities, inland river valleys, and parts of the Metro-North and Interstate 95 corridor.

History of Area Code 203

Area code 203 was established in 1947. It was one of the original North American area codes created by AT&T and the Bell System. At that time, 203 covered the entire state of Connecticut.

Area code 860 split from 203 in 1995. After that split, 203 remained in southwestern Connecticut, while 860 served most of the rest of the state. In 2009, area code 475 was added as an overlay for the same geographic area as 203, which made 10-digit dialing necessary in the region.

Key Facts About Area Code 203

• Area code 203 is a geographic area code in the state of Connecticut.
• Bridgeport is a major city in area code 203, and New Haven, Stamford, Norwalk, and Waterbury also use it.
• Area code 203 is in the Eastern Time Zone.
• Area code 203 was created in 1947 as one of the original North American area codes.
• Area code 203 originally covered all of Connecticut until area code 860 split from it in 1995.
• Area code 475 overlays area code 203 in southwestern Connecticut, and both codes now serve the same region.
• Yale University in New Haven is one of the best-known institutions in the 203 area.
• The 203 region includes coastline on Long Island Sound and major cities in Fairfield and New Haven counties.

Frequently Asked Questions

What state is area code 203 in?

Area code 203 is in Connecticut.

What major cities use area code 203?

Major cities in area code 203 include Bridgeport, New Haven, Stamford, Norwalk, Waterbury, Greenwich, Danbury, and Milford.

Is area code 203 a toll-free number?

No. Area code 203 is a geographic area code for southwestern Connecticut.