475 area code — New Haven, CT geographic

Data: NANPA public reports, current as of July 28, 2026.

If a call shows area code 475, the number was issued in the New Haven area — a code active since 2009, on Eastern time. The same territory is also served by its overlay code (203/475 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.

The code currently holds 282 working prefixes, held by 31 different carriers. Of these, 282 are pooled prefixes shared by multiple carriers. Numbers are anchored to 32 rate centers — billing localities that fix where each prefix belongs.

The current NANPA exhaust forecast for the 203/475 complex is 4Q 2055.

The code was carved out of 203 (2009).

Local calls inside 475 are dialed 10D; 1+10 permissible at service provider discretion.

To check where a specific 475 number was issued, look up its six-digit prefix; to check who is actually calling, ignore the display and verify through an official callback number — caller ID is assertable and routinely spoofed.

Largest localities in 475

FAQ

Why am I getting spam calls from 475 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 475 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 475 number from?

475 is assigned to New Haven and surrounding areas of Connecticut in the Eastern time zone. The three digits after the area code (the prefix) narrow it down to a rate center.

Is 475 a toll-free number?

No. 475 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.

Why do 203 and 475 cover the same place?

They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 203/475 complex shares one service area, and local calls are dialed with 10 digits.