Area codes in London, Ontario
London, Ontario uses 4 area codes — 519, 226, 548 and 382. The main London area code is 519.
Area codes serving London
Phone numbers in London are written as ten digits — for example (519) 555-0190 — and fall in the Eastern Time zone.
How London came to have 4 area codes
The original London area code is 519, in service since 1953. As the area ran low on available numbers, overlay codes were added over the same region for new phone lines: 226 (2006), 548 (2016) and 382 (2023). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why London now uses all 4 codes and every local call is dialed with ten digits.
All Ontario area codes · Is a London call a scam?
Nearby cities
- Kitchener area codes
- Guelph area codes
- Hamilton area codes
- Erie area codes
- Oakville area codes
- Brampton area codes
- Warren area codes
- Troy area codes
More cities in Ontario
- Toronto area codes
- Ottawa area codes
- Thunder Bay area codes
- Kingston area codes
- Windsor area codes
- Barrie area codes
- Oshawa area codes
- Sudbury area codes
Frequently asked questions
What is the area code for London?
The main area code for London, Ontario is 519. London is now served by 4 area codes in total: 519, 226, 548, 382.
How many area codes does London have?
London has 4 area codes: 519, 226, 548, 382.
Why does London have more than one area code?
As London used up the numbers available in its original area code (519, in service since 1953), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a London number?
Dial all 10 digits — the area code (519 or 226 or 548 or 382) 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.