Phone area codes for Kingston, ON

Kingston sits at the mouth of the Cataraqui River where Lake Ontario flows into the St. Lawrence. It briefly served as the capital of the Province of Canada and is home to Queen's University and the Royal Military College.

Dialling from and to Kingston

Because Kingston sits inside an overlay region with 3 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 Kingston 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.

About Kingston, Ontario

Kingston is located in Ontario, Canada. Kingston sits at the mouth of the Cataraqui River where Lake Ontario flows into the St. Lawrence. It briefly served as the capital of the Province of Canada and is home to Queen's University and the Royal Military College. The city falls within the Eastern Time (EST/EDT, UTC-5/-4) time zone.

Numbers issued to subscribers in Kingston can come from any of the area codes assigned to the surrounding numbering plan area: 613, 343, 753. With number portability now standard across all Canadian carriers, the area code attached to a Kingston 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 613 or 343 or 753, the caller is most likely either based in Kingston 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.