Area Code 314

About Area Code 314

Area code 314 is a geographic telephone area code assigned to St. Louis, Missouri. It operates in the Central time zone and was first introduced in 1947. Original NANP code. St. Louis area. Overlay 555 not active; 636 split.

Within Missouri, area code 314 shares numbering capacity with 5 other area codes. The state's 6,184,543-person population (2023 Census Bureau estimate) is served by a combined 6 active codes, with 314 primarily responsible for the St. Louis region. Missouri's state capital is Jefferson City, and its largest city is Kansas City.

When you receive a call from a 314 number on your Caller ID, the call originated from a phone number assigned to the 314 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 314 only confirms where the number was originally assigned.

Where is the 314 area code located?

Area code 314 is assigned to St. Louis, Missouri, in the Central time zone. The state of Missouri uses 6 active area codes, and 314 is one of them. Calls placed from the 314 area code originate from numbers assigned by NANPA — the North American Numbering Plan Administrator — and the 314 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 314 area code?

The 314 area code serves 9 notable cities, listed below in order of population. The largest city in the 314 territory is Kansas City (508,090 residents in Wyandotte County).

• Kansas City, MO — 508,090 residents (32.7% of 314 numbers)
• Saint Louis, MO — 286,578 residents (18.4% of 314 numbers)
• Springfield, MO — 171,591 residents (11% of 314 numbers)
• Independence, MO — 122,924 residents (7.9% of 314 numbers)
• Columbia, MO — 126,532 residents (8.1% of 314 numbers)
• Lee's Summit, MO — 102,092 residents (6.6% of 314 numbers)
• O'Fallon, MO — 92,652 residents (6% of 314 numbers)
• Saint Joseph, MO — 72,779 residents (4.7% of 314 numbers)
• Saint Charles, MO — 71,036 residents (4.6% of 314 numbers)

Phone number format in area code 314

All phone numbers within area code 314 follow the standard North American 10-digit format:(314) 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 + 314 + 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 314 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 314

Original NANP code. St. Louis area. Overlay 555 not active; 636 split.

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 314 area code safe to answer?

Area code 314 itself is a normal geographic code with no elevated spam risk. That said, scammers can spoof any area code — including 314 — so if you don't recognize the full number, let it go to voicemail and verify the caller's identity before calling back.