203 Area Code
Connecticut, USA
Local time now · Eastern Time
3:44 AM
Area code 203 is in Connecticut, USA, serving Bridgeport, Stamford, New Haven and Waterbury. It uses Eastern Time — the time there now is 3:44 AM. 475 is an overlay for the same area, so local calls need 10-digit dialing. In service since 1947.
| Area code | 203 |
|---|---|
| Location | Connecticut, USA |
| Major cities | Bridgeport, Stamford, New Haven, Waterbury, Norwalk, Danbury, Greenwich, Fairfield |
| Time zone | Eastern Time |
| Overlay codes | 475 |
| In service since | 1947 |
| Dialing | 1+10 permissible at service providers discretion |
Other area codes in Connecticut
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Frequently asked questions
Where is area code 203?
Connecticut, USA — including Bridgeport, Stamford, New Haven, Waterbury and Norwalk.
What time zone is area code 203?
Eastern Time.
How do I call a 203 number from abroad?
Dial your international access code, then 1 (the country code), then 203 and the 7-digit number — for example +1 203 555 0100. From the UK or India dial 00 1 203 …; from Bangladesh 00 1 203 … .
Is a call from 203 a scam?
Not by itself — 203 is an ordinary geographic area code in Connecticut. Numbers can be spoofed, so be careful with unexpected calls asking for money or personal details.
Sources: North American Numbering Plan Administrator (NANPA) NPA database (10/25/2026); major cities from Wikidata (CC0). An area code shows where a number was first assigned — with number portability and mobile phones, the caller may be anywhere.