905 Area Code
Covers Mississauga and nearby communities in Ontario.
(905) 555-0142Area code 905 map
Interactive coverage map for area code 905, centered on Mississauga, Ontario
43.8501, -79.0329
Open in OpenStreetMapArea code 905 coverage map — centered on Mississauga. Shaded area shows the approximate reach around the primary city.
Calls tagged with area code 905 come from Mississauga and nearby communities in Ontario. It covers communities such as Mississauga, Ajax, Ancaster, Brampton and more across Ontario. The region observes local time, so a number like (905) 555-0142 is on that clock right now. Neighboring area codes include 416, 437, 647. It is not currently paired with an overlay code. Local calls inside the 905 area can generally be placed with ten digits, and you do not need a leading 1 for domestic calls. Scroll on for a real-time clock, an area map, the cities and counties inside 905, its related area codes, and practical advice on 905 robocalls and caller-ID spoofing.
Cities covered by 905
Cities & neighborhoods
- Mississauga
- Ajax
- Ancaster
- Brampton
- Burlington
- Cobourg
- Fort Erie
- Hamilton
- Keswick
- Markham
- Milton
- Newmarket
- Niagara Falls
- Oakville
- Oshawa
- Pickering
- Port Colborne
- Richmond Hill
- St. Catharines
- Uxbridge
- Welland
Looking for the broader picture? See all Ontario area codes.
Nearby & overlay area codes
Overlay codes (same area)
These share 905’s geography — a number in either code can be on the same street.
905 has no overlay code right now.
Neighboring codes
Codes for adjacent regions and metros.
Is a call from 905 a scam?
Area code 905 serves Mississauga and the surrounding area, so most calls are ordinary local and business traffic. As everywhere, spam and robocalls do use 905 numbers, frequently by spoofing a local-looking caller ID to boost pickup rates. The area code itself tells you nothing about who is really calling, so judge the call by what's said, not the number.
Red flags to watch for
- Pressure to act right now, or threats of arrest, fines, or service being cut off.
- Requests to pay with gift cards, wire transfer, crypto, or a payment app.
- Asking for passwords, one-time codes, your SSN, or full card/bank numbers.
- A robocall or recording, or a number that won’t let you call back.
When unsure, hang up and call the organization back on a number you look up yourself.
Calling a 905 number from abroad
Every 905 number is a US/Canada +1 number. From a mobile anywhere, the simplest approach is to dial it in international format:
+1 905 555-0142If your phone can’t dial the +, replace it with your country’s exit code, then 1, then the number:
- UK, Germany, France & most of Europe
00 1 905 555-0142 - Australia
0011 1 905 555-0142 - Japan
010 1 905 555-0142 - Mexico
00 1 905 555-0142
Within the US and Canada you don’t need any of this — just dial the ten digits 905 555-0142.
Reverse phone lookup
Check any US or Canada number to see whether it's a working line, which carrier it sits on, whether it's mobile, landline or VoIP, and roughly where it's registered.
Shows carrier, line type and location. Owner name isn't available here.
Results are for personal, informational use only and may not be used for employment, credit, housing or tenant-screening decisions.
Area code 905: frequently asked questions
Where is the 905 area code located?
The 905 area code is located in Ontario, centered on Mississauga. Communities in the 905 area include Mississauga, Ajax, Ancaster, Brampton, Burlington, Cobourg.
What time zone is 905 in?
Area code 905 is in the local time zone (UTC-5 (EST) / UTC-4 (EDT)). You can see the exact current local time for Mississauga on the live clock above.
What cities use area code 905?
Cities and areas that use 905 include Mississauga, Ajax, Ancaster, Brampton, Burlington, Cobourg. Its primary city is Mississauga, ON.
Do I need to dial 1 before 905?
You generally do not need to dial a leading 1 for domestic calls to 905. Ten-digit dialing (the 905 code plus the seven-digit number) is the safest habit.
Is 905 a toll-free or scam number?
No — 905 is a normal geographic area code for Mississauga, not a toll-free code (toll-free codes are 800, 833, 844, 855, 866, 877 and 888). A 905 number is not inherently a scam, but the code can be spoofed. See the spam-call section above for how to tell.
What are the overlay area codes for 905?
Area code 905 does not currently have an overlay code; it is not layered on top of another code in the same area.