475 Area Code — New Haven, CT
Area code 475 serves New Haven and 2 other cities in Connecticut. Local time follows America/New_York. It overlays with 203, so 10-digit dialling is required.
- State
- Connecticut
- Primary city
- New Haven
- Timezone
- America/New_York
- In service since
- 2009
- Type
- Overlay
- Overlay codes
- 203
Overlay of 203
Cities Served by 475
The 475 area code covers 3 cities and communities in Connecticut.
- New Haven
- Bridgeport
- Stamford
About Area Code 475
Area code 475 is a North American Numbering Plan (NANP) area code that has been in service since 2009. It is administered by NANPA on behalf of the FCC and serves the Connecticut region anchored on New Haven.
475 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (203). Overlays are created when a region exhausts the supply of phone numbers in its original area code. Within an overlay region, residents must dial all 10 digits even for local calls, because the same 7-digit number can exist under multiple area codes.
Mobile numbers in 475 are portable: a person who moved away from New Haven may still carry a 475 mobile number on their device. If you receive an unexpected call from a 475 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Connecticut, you may also interact with neighbouring or overlay codes (203). See the related codes section below to explore the rest of Connecticut.
Other Connecticut Area Codes
Continue exploring the Connecticut numbering plan.
475 Area Code FAQ
Where is area code 475?
Area code 475 is located in Connecticut, primarily serving New Haven and surrounding cities including Bridgeport, Stamford. The region operates on ET (America/New_York) time.
What state is 475 area code?
475 is a Connecticut area code. It was put into service in 2009 as an overlay and shares its geographic footprint with overlay code 203.
Is 475 a scam area code?
475 is a legitimate North American area code allocated by NANPA to Connecticut. Like any geographic area code, scammers sometimes spoof 475 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 475 use?
Area code 475 operates on ET (America/New_York). Numbers in this area code follow standard Connecticut time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 475 phone number?
Yes. Use the reverse lookup widget above to enter a full 475 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.
What's the difference between 475 and 203?
475 and 203 cover the same Connecticut geographic area as overlay codes. Calls between them are local, but you must dial all 10 digits. New phone numbers in this region are assigned from either pool depending on what's available with the carrier at signup.