203 area code
The 203 area code covers southwestern Connecticut, including most of Fairfield County and all of New Haven County. Main cities include Bridgeport, New Haven, Stamford, Norwalk, Danbury and Waterbury.
- State
- Connecticut
- Main cities
- Bridgeport, New Haven, Stamford, Norwalk, Danbury, Waterbury
- Time zone
- Eastern Time
- Same area as
- 475
- In service since
- 1947
- Local calls
- 10 digits
Get a free 203 number for your business
Pick 203 when you set up your number and Scheduley gives your business a local Bridgeport number for calls and texts, answered 24/7 by an AI receptionist that books appointments and jobs. The number is free. AI calls are $2 a minute after your 10 welcome minutes.
Get a 203 number free- Pick your area code
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Where is the 203 area code?
Area code 203 covers southwestern Connecticut, including most of Fairfield County and all of New Haven County, including Bridgeport, New Haven, Stamford, Norwalk, Danbury and Waterbury. It went into service in 1947, as one of the original North American area codes. It shares the same area with 475, so new local numbers there can get any of these codes. Local calls need all 10 digits.
Got a call from a 203 number?
A 203 number was first given out in the Bridgeport area. Area codes show where a number was assigned, not where the caller is today, and spam callers can fake any number. If you don’t know the caller, let it go to voicemail or look up the full number before you call back.
203 area code FAQ
Where is the 203 area code?
203 covers southwestern Connecticut, including most of Fairfield County and all of New Haven County, including Bridgeport, New Haven, Stamford, Norwalk, Danbury and Waterbury.
What time zone is area code 203?
Area code 203 is on Eastern Time.
What other area codes cover the same area as 203?
475. They’re overlay codes for the same area, so a local number there can have any of them.
Can I get a free 203 business phone number?
Yes. Pick 203 when you set up your Scheduley number and it gets a local number for you, if one is available. The number is free, and an AI receptionist can answer it 24/7 and book appointments.