Phone area codes for Thunder Bay, ON
1 active area code · Eastern Time (EST/EDT, UTC-5/-4) · population 108,843.
Thunder Bay sits at the head of Lake Superior and is the largest city in northwestern Ontario. It serves as a major Great Lakes port and grain shipping hub.
Area codes serving Thunder Bay
Dialling from and to Thunder Bay
Because Thunder Bay sits inside a single-NPA region, callers may still be able to use 7-digit local dialling, though 10-digit dialling is universally accepted. From outside Canada and the United States, dial your international access prefix, then +1, then the 10-digit number.
Mobile carriers in Thunder Bay 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 Thunder Bay
About Thunder Bay, Ontario
Thunder Bay is located in Ontario, Canada. Thunder Bay sits at the head of Lake Superior and is the largest city in northwestern Ontario. It serves as a major Great Lakes port and grain shipping hub. The city falls within the Eastern Time (EST/EDT, UTC-5/-4) time zone.
Numbers issued to subscribers in Thunder Bay can come from any of the area codes assigned to the surrounding numbering plan area: 807. With number portability now standard across all Canadian carriers, the area code attached to a Thunder Bay 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 807, the caller is most likely either based in Thunder Bay 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.