🇺🇸USA State Guide: Missouri

Missouri (MO)
Calling Codes

Need to call St. Louis, Kansas City, or Springfield? Access the complete guide to Missouri area codes (314, 816, 417, and more). Make calls to the "Show-Me State" instantly from your browser.

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How to Call Missouri

Calling Missouri follows the standard North American Numbering Plan (NANP).

1

Exit Code

Dial 00 (Europe) or 011 (World) to dial out.
(Use + on mobile/VoIP)

2

US Code (+1)

Dial +1. This is the country code for the United States, including Missouri.

3

Area Code

Dial the 3-digit Missouri area code (e.g., 314) followed by the 7-digit number.

Time Zone Alert: Central Time (CT)

Missouri is in the Central Time Zone. When calling from Europe (e.g., London), Missouri is usually 6 hours behind.
Best time to call: 9:00 AM - 5:00 PM MO time.

Missouri Area Codes List

Find the right area code for your destination in Missouri.

Area CodeMajor Cities / Region
314St. Louis City & inner suburbs
816Kansas City & St. Joseph
417Springfield, Joplin, Branson (Southwest)
573Columbia, Jefferson City, Cape Girardeau (East/Central)
636Chesterfield, St. Charles (West/South St. Louis suburbs)
660Sedalia, Kirksville, Maryville (North/West rural)

Why Use VoIP to
Call Missouri?

Calling the USA from abroad using traditional carriers is expensive. StartACall connects you to Missouri numbers using the internet, ensuring high quality at a fraction of the cost.

  • Reach St. Louis & KC businesses instantly
  • No international long-distance fees
  • Works on any browser (Chrome, Safari, Edge)
  • Secure, encrypted connection

Local Presence

Call local businesses in Branson or Columbia without friction.

Global Access

Call from anywhere in the world as if you were in the US.

Private

Your personal number stays private when making web calls.

Fast

WebRTC technology ensures low latency and HD voice.

Frequently Asked Questions

What is the area code for St. Louis?

St. Louis City and the inner suburbs use area code 314. The outer suburbs (West/South) use 636. Across the river in Illinois, the code is 618.

What is the area code for Kansas City, MO?

Kansas City, Missouri uses area code 816. Note that Kansas City, Kansas (across the border) uses area code 913.

Are there any new area codes in Missouri?

Yes, overlay codes are becoming common. For example, 557 is an overlay for 314 (St. Louis), and 975 is an overlay for 816 (KC). Always dial the full 10 digits.

How much does it cost to call Missouri from Europe?

With traditional carriers, it can cost upwards of $1/min. With StartACall, rates are very competitive because we route calls over the internet.

Ready to call Missouri?

Connect with friends, family, or businesses in the Show-Me State instantly.

Missouri's Two-Metro Numbering Map: Overlays, Outstate Codes, and Timing Your Call

In short

Missouri's phone map is anchored by St. Louis on one border and Kansas City on the other, with distinct codes filling the space between. This guide explains the overlay added to the St. Louis region, what 636, 573, 417, and 660 really cover, and how Central Time shapes calls from overseas.

St. Louis, Its Suburbs, and the New Overlay

The city of St. Louis and its inner ring have used 314 since the original 1947 plan. As number demand grew, regulators added 557 as an overlay for the same footprint, so newer lines in the city may begin with 557 while older ones keep 314. Both reach the same neighborhoods.

The western and southern suburbs beyond the inner ring, including St. Charles, O'Fallon, and Chesterfield, sit in 636. Many households straddle this boundary socially, so it is normal for one family to hold numbers in two different codes. Those numbers spread across 314, 557, and 636 alike.

Kansas City and the Outstate Codes

Kansas City, Missouri and St. Joseph run on 816. Remember that the metro spills across the state line, and Kansas City, Kansas uses 913, a different state and code entirely. Check which side of the border your contact sits on before assuming 816.

The rest of the state divides cleanly. Springfield, Branson, and Joplin in the southwest use 417. Columbia, Jefferson City, and Cape Girardeau across mid and southeast Missouri use 573. The rural north-central band, including Sedalia and Kirksville, uses 660. Each code is a genuine geographic region, not an overlay.

Two details round out the map. Lake of the Ozarks resort towns such as Osage Beach fall under 573 rather than Springfield's 417, which surprises first-time visitors, and the 660 region reaches nearly to the Iowa line, covering some of the least densely populated exchanges in the state.

Calling Windows on Central Time

All of Missouri observes Central Time. From the UK that is a six hour gap, so a 2 pm London call reaches St. Louis at 8 am, just as offices open. From Nigeria or much of West Africa the gap is seven hours, putting late afternoon in Lagos at morning in Kansas City.

Callers in East Asia should aim for their own late evening. At 10 pm in Seoul or Tokyo it is early or mid morning in Missouri. For family conversations, Missouri's Sunday evening equals Monday morning in Asia, a quirk worth remembering when scheduling regular calls.

Missouri follows daylight saving statewide. Clocks spring forward in March two or three weeks before Europe changes, which briefly narrows the transatlantic gap by an hour and quietly breaks standing meeting times every spring. Recheck the offset during those weeks before assuming a missed call was deliberate.

What International Callers Actually Pay

Every Missouri number, mobile or fixed, costs the same to reach because US numbering folds cell phones into the ordinary geographic codes. There are no premium mobile prefixes to avoid, and no connection fees apply on per-minute VoIP services. Rates hold steady at any hour of the day.

Calling through the browser keeps the process simple. StartACall works over WebRTC in Chrome, Safari, Firefox, or Edge with no app or SIM, pay-as-you-go rates, and a free first call, which makes it easy to verify a 314 or 816 number connects before you commit credit.

Frequently asked questions

What is the 557 area code?+

557 is an overlay covering the same territory as 314, the St. Louis city and inner suburb region. Newly issued numbers there may start with 557, and they are dialed exactly like 314 numbers from abroad.

Is Kansas City all one area code?+

No. Kansas City, Missouri uses 816, but the metro crosses into Kansas, where Kansas City, Kansas and Overland Park use 913. Confirm the state before dialing, since the two codes belong to different states.

Which code covers Branson and Springfield?+

Both are in 417, the southwest Missouri code that also includes Joplin. From overseas, dial your exit code, then 1 417 followed by the seven-digit local number. The code has never needed an overlay.

How far ahead is Europe from Missouri?+

The UK is six hours ahead of Missouri and most of continental Europe is seven. A call at 5 pm from Paris reaches Missouri at 10 am Central Time. The gap holds steady through most of the year.

Do I pay extra to reach a Missouri mobile from abroad?+

No. Mobiles in Missouri use the same geographic area codes as landlines, and international per-minute rates treat them identically. One flat rate applies whether the number rings a farmhouse or a smartphone.

Last reviewed June 2026Reviewed by the StartACall calling teamDialing rules cross checked against ITU international dialing procedures
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