Area Code 431

About Area Code 431

Area code 431 is a geographic telephone area code assigned to Winnipeg, Manitoba. It operates in the Central time zone and was first introduced in 2012. Overlay for 204. Manitoba.

Within Manitoba, area code 431 operates alongside 2 other area codes. The province's 2023 population estimate is 1,463,164. Manitoba's capital is Winnipeg and its largest city is Winnipeg.

When you receive a call from a 431 number on your Caller ID, the call originated from a phone number assigned to the 431 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 431 only confirms where the number was originally assigned.

Where is the 431 area code located?

Area code 431 is assigned to Winnipeg, Manitoba, in the Central time zone. The state of Manitoba uses 3 active area codes, and 431 is one of them. Calls placed from the 431 area code originate from numbers assigned by NANPA — the North American Numbering Plan Administrator — and the 431 prefix appears on Caller ID for both landline and wireless calls placed from this region.

The Central time zone observes Daylight Saving Time, shifting from UTC-6 to UTC-5 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 431 area code?

The 431 area code serves 11 notable cities, listed below in order of population. The largest city in the 431 territory is Winnipeg (749,534 residents in Winnipeg County).

• Winnipeg, MB — 749,534 residents (83.5% of 431 numbers)
• Brandon, MB — 51,313 residents (5.7% of 431 numbers)
• Steinbach, MB — 17,806 residents (2% of 431 numbers)
• Thompson, MB — 13,465 residents (1.5% of 431 numbers)
• Portage la Prairie, MB — 13,404 residents (1.5% of 431 numbers)
• Winkler, MB — 13,009 residents (1.4% of 431 numbers)
• Selkirk, MB — 10,545 residents (1.2% of 431 numbers)
• Morden, MB — 9,929 residents (1.1% of 431 numbers)
• Dauphin, MB — 8,600 residents (1% of 431 numbers)
• Flin Flon, MB — 4,940 residents (0.6% of 431 numbers)

Phone number format in area code 431

All phone numbers within area code 431 follow the standard North American 10-digit format:(431) 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 + 431 + 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 431 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 431

Overlay for 204. Manitoba.

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 431 area code safe to answer?

Area code 431 itself is a normal geographic code with no elevated spam risk. That said, scammers can spoof any area code — including 431 — so if you don't recognize the full number, let it go to voicemail and verify the caller's identity before calling back.