What Is the 905 Area Code?
The 905 area code serves the Greater Toronto Area (GTA) suburbs surrounding the City of Toronto in Ontario, Canada. It was created on October 4, 1993, when the original 416 area code was split to accommodate growing demand for phone numbers in southern Ontario.
While 416 (and later 647 and 437) remained within Toronto's city limits, 905 became the code for the rapidly expanding ring of cities around it — the economic powerhouse known as the GTA.
Today, the 905 region is home to over 4 million people and some of Canada's fastest-growing business corridors, making it one of the most commercially important area codes in the country.
Where Is the 905 Area Code Located?
The 905 area code forms a horseshoe shape around the City of Toronto, covering the following regions and municipalities:
Peel Region
| City | Included? |
|---|---|
| Mississauga | ✅ Yes |
| Brampton | ✅ Yes |
| Caledon | ✅ Yes |
York Region
| City | Included? |
|---|---|
| Markham | ✅ Yes |
| Vaughan | ✅ Yes |
| Richmond Hill | ✅ Yes |
| Newmarket | ✅ Yes |
| Aurora | ✅ Yes |
| King | ✅ Yes |
| Whitchurch-Stouffville | ✅ Yes |
| Georgina | ✅ Yes |
| East Gwillimbury | ✅ Yes |
Halton Region
| City | Included? |
|---|---|
| Oakville | ✅ Yes |
| Burlington | ✅ Yes |
| Milton | ✅ Yes |
| Halton Hills | ✅ Yes |
Durham Region
| City | Included? |
|---|---|
| Oshawa | ✅ Yes |
| Whitby | ✅ Yes |
| Ajax | ✅ Yes |
| Pickering | ✅ Yes |
| Clarington | ✅ Yes |
Hamilton
| City | Included? |
|---|---|
| Hamilton | ✅ Yes |
| Stoney Creek | ✅ Yes |
| Dundas | ✅ Yes |
| Ancaster | ✅ Yes |
Niagara Region
| City | Included? |
|---|---|
| St. Catharines | ✅ Yes |
| Niagara Falls | ✅ Yes |
| Welland | ✅ Yes |
In 2001, the 289 area code was introduced as an overlay to the 905 region. In 2013, the 365 area code was added as a second overlay. All three codes — 905, 289, and 365 — cover the same geographic area.
What Time Zone Is the 905 Area Code In?
The 905 area code is in the Eastern Time Zone (ET):
- EST (Winter): UTC−5
- EDT (Summer): UTC−4
This is identical to Toronto (416/647/437), New York, and Miami, which simplifies business communication across the corridor.
The Economic Power of the 905 Region
The 905 region isn't just suburban sprawl — it's an economic engine:
- Mississauga is home to over 60 Fortune 500 companies' Canadian headquarters
- Markham is known as Canada's high-tech capital, with IBM, AMD, Qualcomm, and Huawei offices
- Vaughan hosts major distribution and logistics hubs
- Burlington and Oakville are major corporate headquarters zones
- Hamilton is reinventing itself as a tech and healthcare hub
- Brampton is one of Canada's largest logistics corridors
For businesses targeting GTA customers outside downtown Toronto, a 905 number signals suburban authenticity and local presence.
905 vs. 416: What's the Difference?
| Feature | 905 | 416 |
|---|---|---|
| Geographic area | GTA suburbs | Toronto (city proper) |
| Year introduced | 1993 | 1947 |
| Population served | ~4+ million | ~2.7 million |
| Business perception | Suburban/industrial | Urban/prestigious |
| Overlays | 289, 365 | 647, 437 |
| Availability | Good | Very limited |
Which should your business use? It depends on your customer base. If your clients are in Mississauga, Markham, or Hamilton, a 905 number builds immediate local trust. If you serve downtown Toronto, a 647 or 416 number is better.
The best strategy? Use both. With a VoIP provider like CallOrbit, you can have a 905 number and a 647 number on the same account, routing calls to the same team.
How to Get a 905 Phone Number for Your Business
Option 1: Traditional Carrier
Request a 905 number from Bell, Rogers, or Telus. This typically requires a physical address in the 905 region and a contract.
Option 2: VoIP Provider (Recommended)
With CallOrbit, you can get a 905 virtual phone number instantly — no GTA office required. Your 905 number works on any device, from anywhere.
Why VoIP is the smarter choice for 905 numbers:
- No physical office needed in the GTA
- Add auto-attendant and call routing
- Forward calls to mobile, laptop, or desk phone
- Get multiple area codes (905 + 647 + 800 toll-free) on one account
- Port your existing number if you already have one
Option 3: Port an Existing Number
Already have a 905 number? Port it to CallOrbit and keep your number while upgrading to a modern cloud phone system.
Who Uses 905 Numbers?
- Contractors and home service businesses serving GTA suburbs
- Real estate agents working Mississauga, Markham, Oakville, and Hamilton markets
- Law firms with offices in suburban business parks
- E-commerce businesses wanting a local GTA customer service number
- Healthcare providers in suburban clinics
- Startups that want GTA credibility without GTA office rent
Is 905 a Scam Area Code?
No. The 905 area code is a completely legitimate code regulated by the CRTC and assigned by the Canadian Numbering Administrator. However, scammers can spoof any area code, including 905.
Tips to avoid 905 scam calls:
- Don't return calls to unknown 905 numbers that ring once and hang up
- Never provide personal information to unsolicited callers
- Report suspicious calls to the Canadian Anti-Fraud Centre
Frequently Asked Questions About the 905 Area Code
- What cities are in the 905 area code?
- Mississauga, Brampton, Markham, Vaughan, Richmond Hill, Oakville, Burlington, Hamilton, Oshawa, Whitby, Ajax, Pickering, St. Catharines, Niagara Falls, and many more GTA municipalities.
- Is 905 the same as Toronto?
- No. 905 covers the suburbs around Toronto. Toronto itself uses 416, 647, and 437.
- What is the 905 time zone?
- Eastern Time (ET) — the same as Toronto and New York.
- Can I get a 905 number without living in the GTA?
- Yes. A virtual phone number from CallOrbit lets you get a 905 number from anywhere.
- What's the difference between 905, 289, and 365?
- They all cover the same geographic area. 289 (2001) and 365 (2013) were added as overlays when 905 numbers started running out.
Get a 905 Number for Your GTA Business
CallOrbit lets you get a professional 905 number in under 2 minutes — complete with auto-attendant, call forwarding, voicemail-to-email, and enterprise-grade call quality.
Serve the entire GTA with confidence. No contracts. No hardware.