Phone area codes for Saint John, NB
2 active area codes · Atlantic Time (AST/ADT, UTC-4/-3) · population 69,895.
Saint John is New Brunswick's second-largest city and Canada's first incorporated city, founded in 1785. It sits at the mouth of the Saint John River on the Bay of Fundy.
Area codes serving Saint John
Dialling from and to Saint John
Because Saint John sits inside an overlay region with 2 overlapping area codes, callers must always dial 10 digits — even for calls between two phones on the same street. From outside Canada and the United States, dial your international access prefix, then +1, then the 10-digit number.
Mobile carriers in Saint John typically issue numbers from whichever overlay code is currently being released by the NANP relief plan. As a result, two members of the same household frequently carry numbers from two different area codes — for example a long-time resident with an original-assignment number and a newer subscriber with an overlay number.
Major carriers serving Saint John
About Saint John, New Brunswick
Saint John is located in New Brunswick, Canada. Saint John is New Brunswick's second-largest city and Canada's first incorporated city, founded in 1785. It sits at the mouth of the Saint John River on the Bay of Fundy. The city falls within the Atlantic Time (AST/ADT, UTC-4/-3) time zone.
Numbers issued to subscribers in Saint John can come from any of the area codes assigned to the surrounding numbering plan area: 506, 428. With number portability now standard across all Canadian carriers, the area code attached to a Saint John number tells you only where that number was first issued — not who currently carries it or where the device is physically located.
If you are trying to identify a recent call from 506 or 428, the caller is most likely either based in Saint John or another community within the same NPA, has previously held a number issued in this area, or — in the case of telemarketing and scam calls — is spoofing a local prefix to increase the chance you pick up.