Connecticut · Area code
Area Code 203New Haven, CT
Area code 203 is in Connecticut, United States, and serves New Haven, Stamford, Norwalk, Bridgeport and Greenwich and other places nearby. Its time zone is Eastern Time.
Area code 203 at a glance
- Area code
- 203
- Main place
- New Haven, CT
- State
- Connecticut
- Country
- 🇺🇸 United States
- Country calling code
- +1
- Time zone
- Eastern Time (America/New_York)
- Dial from abroad
- +1 203 XXX XXXX
- Dial inside the US and Canada
- 1 203 XXX XXXX
Cities and places in area code 203
The places phone numbers beginning 203 were issued in, the most common first.
- New Haven, CT
- Stamford, CT
- Norwalk, CT
- Bridgeport, CT
- Greenwich, CT
- Waterbury, CT
- Milford, CT
- Danbury, CT
- Meriden, CT
- Shelton, CT
- Stratford, CT
- Westport, CT
- Fairfield, CT
- Hamden, CT
- Wallingford, CT
- Branford, CT
- Cheshire, CT
- West Haven, CT
- Wilton, CT
- Darien, CT
- East Haven, CT
- New Canaan, CT
- Newtown, CT
- Southbury, CT
- Guilford, CT
- Madison, CT
- Naugatuck, CT
- Orange, CT
- Ridgefield, CT
- Ansonia, CT
- Brookfield, CT
- New Fairfield, CT
- North Haven, CT
- Bethany, CT
- Bethlehem, CT
- Derby, CT
- Middlebury, CT
- Monroe, CT
- Prospect, CT
- Seymour, CT
Look up a 203 number
Enter a full number with area code 203: it shows the line type, place, network and time zone, and every way to write it. Free and private.
Area code 203: frequently asked questions
Where is area code 203?
Area code 203 is in Connecticut, United States. It serves places including New Haven, Stamford, Norwalk, Bridgeport, Greenwich, Waterbury, Milford and Danbury.
What time zone is area code 203 in?
Area code 203 is on Eastern Time. A number with this area code can belong to someone living anywhere, so the time zone tells you where the number was issued rather than where the person is.
Which country is area code 203 in?
Area code 203 belongs to the United States, part of the North American Numbering Plan. Country code +1 is shared by the United States, Canada and many Caribbean and Pacific countries; the area code decides which one a number is in.
How do I call a 203 number from another country?
Dial your country's international access code (or press + on a mobile phone), then 1, then 203, then the seven-digit number: +1 203 followed by the number. Inside the United States and Canada, dial 1 and the ten digits.
Can I tell who is calling from an area code?
No. The area code only shows where a number was first issued. People keep their numbers when they move, mobile numbers work anywhere, and callers can disguise the number they call from. To see what the numbering plan says about a specific number, use the free phone number lookup.
What other area codes are in Connecticut?
Other area codes in Connecticut include 475, 860 and 959.