Area code 203
Area code 203 is a telephone area code in the North American Numbering Plan. It serves Connecticut, the United States.
- 203area code
- CTConnecticut
- UScountry
- 1-Jan-47in service
How to dial a 203 number
From within the United States and Canada, dial 1, then 203, then the seven-digit number. From another country, dial your international access code, then +1 203 and the seven-digit number.
Area code 203 covers the same territory as 475. When several area codes share one area like this, it is called an overlay.
Other area codes in Connecticut
Frequently asked questions
Where is area code 203?
Area code 203 serves Connecticut, the United States.
What is the country code for a 203 number?
Numbers with North American area codes use the country calling code +1.