Area Code 437 is a Canadian telephone area code that serves the province of Ontario, specifically the city of Toronto and nearby regions. Introduced as an overlay for area codes 416 and 647, this area code was added due to the increased demand for new telephone numbers in the Greater Toronto Area (GTA).
📍 Where is Area Code 437 Located?
Area code 437 is used in the Greater Toronto Area in Ontario, Canada. It covers the same geographic region as:
- 416 – Core downtown Toronto
- 647 – Expanding suburban Toronto
- 437 – Newest overlay for the same region
Key cities in area code 437:
- Toronto
- Etobicoke
- Scarborough
- North York
- York
- East York
This area code does not cover cities like Ottawa, Mississauga, or Hamilton.
🕒 Time Zone of Area Code 437
Area code 437 falls under the Eastern Time Zone (ET):
- Standard Time: UTC −5:00
- Daylight Saving Time: UTC −4:00 (from spring to fall)
🗓️ History of Area Code 437
- Introduced: March 25, 2013
- Overlay for: 416 and 647
- Reason: Rapid population growth, mobile device expansion
- Dialing Format: 10-digit dialing required for all calls
Toronto was originally served by area code 416. As the population grew and technology evolved, overlays 647 (2001) and later 437 (2013) were introduced to prevent number exhaustion.
☑️ Quick Facts about Area Code 437
| Feature | Details |
|---|---|
| Country | Canada |
| Province | Ontario |
| Major City | Toronto |
| Time Zone | Eastern Time (ET) |
| Introduced | March 25, 2013 |
| Overlay For | 416 and 647 |
| Dialing Format | 10-digit dialing |
| Type | Geographic overlay area code |
❓ Frequently Asked Questions (FAQ)
📌 What country is area code 437 from?
Area code 437 is from Canada, specifically in the province of Ontario.
📌 Is area code 437 toll-free?
No, 437 is not toll-free. Standard local and long-distance rates apply based on your service provider.
📌 What cities use area code 437?
The area code is primarily used in Toronto, covering all central boroughs such as Scarborough, Etobicoke, and North York.
📌 When was area code 437 added?
It was introduced on March 25, 2013, as the third overlay for the Toronto region.
📌 Do I have to dial 437 for local calls in Toronto?
Yes. 10-digit dialing is required even for local calls within Toronto.
🔗 Related Area Codes
If you’re interested in learning about other area codes in North America, check out these articles:
- 📞 Area Code 352 – Location, History, Map, Cities, and Phone Scams
- 📞 Area Code 832 – Location, History, Cities, and Phone Scam Info
- 📞 Area Code 672 – Location, Time Zone, and Details
✅ Conclusion
Area code 437 is the newest of Toronto’s three main area codes, introduced to support the city’s continued growth and increasing mobile demand. Whether you’re calling from downtown Toronto or the surrounding boroughs, understanding area code 437 helps ensure smooth communication in one of Canada’s busiest metropolitan areas.