Area codes in Kingston, Ontario

Kingston, Ontario uses 3 area codes — 613, 343 and 753. The main Kingston area code is 613.

Area codes serving Kingston

Phone numbers in Kingston are written as ten digits — for example (613) 555-0190 — and fall in the Eastern Time zone.

How Kingston came to have 3 area codes

The original Kingston area code is 613, in service since 1947. As the area ran low on available numbers, overlay codes were added over the same region for new phone lines: 343 (2010) and 753 (2022). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Kingston now uses all 3 codes and every local call is dialed with ten digits.

All Ontario area codes · Is a Kingston call a scam?

Nearby cities

More cities in Ontario

Frequently asked questions

What is the area code for Kingston?

The main area code for Kingston, Ontario is 613. Kingston is now served by 3 area codes in total: 613, 343, 753.

How many area codes does Kingston have?

Kingston has 3 area codes: 613, 343, 753.

Why does Kingston have more than one area code?

As Kingston used up the numbers available in its original area code (613, in service since 1947), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.

How do you dial a Kingston number?

Dial all 10 digits — the area code (613 or 343 or 753) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.

Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.