Canadian Area Codes / Ontario
The 548 area code
The 548 area code covers Southwestern Ontario, Canada.
Province
Ontario
Time zone
Eastern Time
Country
Canada (+1)
Cities in the 548 area code
Major communities served by 548 include:
Overlay codes for this area
The 548 region shares its territory with these codes — which is why you dial all 10 digits for local calls:
Dialing a 548 number
Within Canada and the United States, dial all ten digits — 548 plus the seven-digit number. Ten-digit dialing is required here because 548 shares its territory with 519, 226. From outside North America, dial +1 548 and then the number.
Is a 548 call spam?
The 548 area code is a legitimate code for Southwestern Ontario — it isn't a scam on its own. But because scammers can spoof caller ID to display any area code, an unexpected 548 call isn't guaranteed to be local or genuine. When in doubt, let it go to voicemail and call back using a number you trust.
Want a local 548 number for your business?
Voiswitch provides local 548 numbers on business phone systems — or ports the one you already have. Free quote, no obligation.
548 area code — questions
Where is the 548 area code?
The 548 area code is in Ontario, Canada. It covers Southwestern Ontario, including London, Waterloo.
What time zone is the 548 area code in?
548 numbers are in the Eastern Time zone.
Is the 548 area code a scam?
No — 548 is a legitimate geographic area code assigned to Southwestern Ontario in Ontario. The code itself isn't a scam. That said, scammers can spoof any area code (including 548) to make a call look local, so an unexpected 548 call isn't guaranteed to be genuine or nearby. Treat unsolicited calls with the usual caution no matter what area code shows.
How do you dial a 548 number?
Within Canada and the US, dial all ten digits — 548 followed by the seven-digit number (ten-digit dialing is required because 548 overlaps with 519, 226). From outside North America, dial +1 548 and then the number.
Is 548 an overlay area code?
The 548 area shares the same territory as 519, 226. Because multiple codes overlap, you dial all 10 digits for local calls.
Can I get a 548 number for my business?
Yes — Voiswitch can provide local 548 numbers, and if you already have one, we can port it to your new phone system. Get a free quote to add a local 548 number.