Learn about the 203 area code, including its location, cities, time zone, introduction date, and related area codes.
203 Area Code Details
Major Cities in the 203 Area Code
The 203 area code is associated with the following cities and communities:
- Bridgeport
- Danbury
- East Haven
- Meriden
- Milford
- Naugatuck
- New Haven
- North Haven
- Norwalk
- Shelton
- Stamford
- Stratford
- Trumbull
- Waterbury
- West Haven
- Westport
Where Is Area Code 203 Located?
The 203 area code serves communities in Connecticut. The exact communities and numbering assignments can change as telephone numbering resources are updated.
203 Area Code Time Zone
The 203 area code is associated with the Eastern time zone.
When Was 203 Area Code Introduced?
The 203 area code was introduced in 01-Jan-1947.
How to Call a 203 Area Code Number
For a call within the same numbering plan, dial the required local number according to your carrier’s dialing rules. For calls from outside the United States, use the United States country code (+1), followed by the area code and seven-digit telephone number.
Related Area Codes
203 Area Code FAQ
What state is 203 area code in?
The 203 area code is associated with Connecticut.
What time zone is 203 area code in?
The 203 area code is associated with Eastern.
What cities use 203 area code?
Bridgeport|Danbury|East Haven|Meriden|Milford|Naugatuck|New Haven|North Haven|Norwalk|Shelton|Stamford|Stratford|Trumbull|Waterbury|West Haven|Westport
More Questions About Area Code 203
What state is area code 203 in?
Area code 203 is associated with Connecticut.
What time zone is area code 203 in?
The listed time zone for area code 203 is Eastern.