905 Area Code
Ontario, Canada
Local time now · Eastern Time
3:44 AM
Area code 905 is in Ontario, Canada, serving Mississauga, Hamilton, Vaughan and Oakville. It uses Eastern Time — the time there now is 3:44 AM. 289, 365 and 742 are overlays for the same area, so local calls need 10-digit dialing. In service since 1993.
| Area code | 905 |
|---|---|
| Location | Ontario, Canada |
| Major cities | Mississauga, Hamilton, Vaughan, Oakville, Richmond Hill, Oshawa, Ajax, Niagara Falls |
| Time zone | Eastern Time |
| Overlay codes | 289, 365, 742 |
| In service since | 1993 |
| Dialing | Ten digit local dialing mandatory 9 June 2001. |
Other area codes in Ontario
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Frequently asked questions
Where is area code 905?
Ontario, Canada — including Mississauga, Hamilton, Vaughan, Oakville and Richmond Hill.
What time zone is area code 905?
Eastern Time.
How do I call a 905 number from abroad?
Dial your international access code, then 1 (the country code), then 905 and the 7-digit number — for example +1 905 555 0100. From the UK or India dial 00 1 905 …; from Bangladesh 00 1 905 … .
Is a call from 905 a scam?
Not by itself — 905 is an ordinary geographic area code in Ontario. Numbers can be spoofed, so be careful with unexpected calls asking for money or personal details.
Sources: North American Numbering Plan Administrator (NANPA) NPA database (10/25/2026); major cities from Wikidata (CC0). An area code shows where a number was first assigned — with number portability and mobile phones, the caller may be anywhere.