Area Code 705

About Area Code 705

Area code 705 is a geographic telephone area code assigned to Sudbury, Ontario. It operates in the Eastern time zone and was first introduced in 1957. Split from 416. Northeastern Ontario. Overlay 249 (2011), 753 (2022).

Within Ontario, area code 705 operates alongside 15 other area codes. The province's 2023 population estimate is 15,996,389. Ontario's capital is Toronto and its largest city is Toronto.

When you receive a call from a 705 number on your Caller ID, the call originated from a phone number assigned to the 705 area code — but be aware that Local Number Portability (in effect since 2003) means the caller could be physically located anywhere in the US or Canada. Area code 705 only confirms where the number was originally assigned.

Where is the 705 area code located?

Area code 705 is assigned to Sudbury, Ontario, in the Eastern time zone. The state of Ontario uses 16 active area codes, and 705 is one of them. Calls placed from the 705 area code originate from numbers assigned by NANPA — the North American Numbering Plan Administrator — and the 705 prefix appears on Caller ID for both landline and wireless calls placed from this region.

The Eastern time zone observes Daylight Saving Time, shifting from UTC-5 to UTC-4 in summer. The local time shown above is always current, so you can quickly check whether it's a reasonable hour to call back.

What cities and counties use the 705 area code?

The 705 area code serves 10 notable cities, listed below in order of population. The largest city in the 705 territory is Toronto (2,794,356 residents in Toronto County).

• Toronto, ON — 2,794,356 residents (38.1% of 705 numbers)
• Ottawa, ON — 1,017,449 residents (13.9% of 705 numbers)
• Mississauga, ON — 717,961 residents (9.8% of 705 numbers)
• Brampton, ON — 656,480 residents (9% of 705 numbers)
• Hamilton, ON — 569,353 residents (7.8% of 705 numbers)
• London, ON — 422,324 residents (5.8% of 705 numbers)
• Markham, ON — 338,503 residents (4.6% of 705 numbers)
• Vaughan, ON — 323,103 residents (4.4% of 705 numbers)
• Kitchener, ON — 257,030 residents (3.5% of 705 numbers)
• Windsor, ON — 229,660 residents (3.1% of 705 numbers)

Phone number format in area code 705

All phone numbers within area code 705 follow the standard North American 10-digit format:(705) NXX-XXXX. The NXX is the central office prefix (also called an "exchange") and XXXX is the subscriber line number. For long-distance calls within the NANP, dial 1 + 705 + NXX + XXXX. From outside North America, dial your country's international access code, then 1 (the NANP country code), then the 10-digit number.

If you need to verify whether a specific 705 number is wireless, landline, or VoIP, you can use our reverse phone lookup tool. Be aware that number portability means the area code no longer guarantees the caller's physical location — only where the number was first assigned.

History of area code 705

Split from 416. Northeastern Ontario. Overlay 249 (2011), 753 (2022).

The original 86 area codes were assigned by AT&T and Bell Labs in 1947 as part of the North American Numbering Plan. At the time, rotary-dial phones meant codes with lower digits (like 212 for NYC, 213 for LA, 312 for Chicago) were given to the largest cities because they took less time to dial. Today's area code assignments still reflect those early choices, even though touch-tone and cell phones made the original reason obsolete.

Is the 705 area code safe to answer?

Area code 705 itself is a normal geographic code with no elevated spam risk. That said, scammers can spoof any area code — including 705 — so if you don't recognize the full number, let it go to voicemail and verify the caller's identity before calling back.