Area Code 203

Country United States
State/Province Connecticut 
Major City Bridgeport 
Easy URL 

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203 Area Code is an area code finder with detailed information on the 203 area code including 203 area code map.

Major cities like Bridgeport within area code 203 are also listed on this page. More area codes, including those outside of Connecticut, are found on the homepage.

Some telephone area codes are overlaid, requiring 10-digit dialing. is your one-stop site for area code lookup, area code search, and area code locator.

Area Code 203 Detail

203 is the area code that covers the southwest of Connecticut, including Fairfield county, New Haven, and part of Litchfield. It overlays area code 475, which will go into effect December 2009. Beginning in November, 2009, all callers in Connecticut must use 10-digit dialing.

203 Area Code Location
Major Cities County State/Province
Bridgeport  Fairfield  CT 
Danbury  Fairfield  CT 
Meriden  New Haven  CT 
Milford  New Haven  CT 
New Haven  New Haven  CT 
Stamford  Fairfield  CT 
Waterbury  New Haven  CT 
West Haven  New Haven  CT 
Other Cities By Name
Ansonia  New Haven  CT 
Beacon Falls  New Haven  CT 
Bethany  New Haven  CT 
Bethel  Fairfield  CT 
Bethlehem  Litchfield  CT 
Botsford  Fairfield  CT 
Branford  New Haven  CT 
Brookfield  Fairfield  CT 
Cheshire  New Haven  CT 
Cos Cob  Fairfield  CT 
Darien  Fairfield  CT 
Derby  New Haven  CT 
East Haven  New Haven  CT 
Easton  Fairfield  CT 
Fairfield  Fairfield  CT 
Georgetown  Fairfield  CT 
Greens Farms  Fairfield  CT 
Greenwich  Fairfield  CT 
Guilford  New Haven  CT 
Hamden  New Haven  CT 
Hawleyville  Fairfield  CT 
Madison  New Haven  CT 
Middlebury  New Haven  CT 
Monroe  Fairfield  CT 
Naugatuck  New Haven  CT 
New Canaan  Fairfield  CT 
New Fairfield  Fairfield  CT 
Newtown  Fairfield  CT 
North Branford  New Haven  CT 
North Haven  New Haven  CT 
Northford  New Haven  CT 
Old Greenwich  Fairfield  CT 
Orange  New Haven  CT 
Oxford  New Haven  CT 
Prospect  New Haven  CT 
Redding  Fairfield  CT 
Redding Center  Fairfield  CT 
Redding Ridge  Fairfield  CT 
Ridgefield  Fairfield  CT 
Riverside  Fairfield  CT 
Roxbury  Litchfield  CT 
Sandy Hook  Fairfield  CT 
Seymour  New Haven  CT 
Shelton  Fairfield  CT 
Sherman  Fairfield  CT 
South Britain  New Haven  CT 
Southbury  New Haven  CT 
Southport  Fairfield  CT 
Stevenson  Fairfield  CT 
Stratford  Fairfield  CT 
Trumbull  Fairfield  CT 
Wallingford  New Haven  CT 
Weston  Fairfield  CT 
Westport  Fairfield  CT 
Wilton  Fairfield  CT 
Wolcott  New Haven  CT 
Woodbridge  New Haven  CT 
Woodbury  Litchfield  CT 

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