Midwest region · Central Time
Missouri Area Codes
All 6 area codes serving Missouri, the cities each one covers, and which are overlays. Missouri is served by 6 area codes in the Central Time zone.
Last updated June 5, 2026
Full list
Every Missouri area code
Missouri is served by 6 area codes in the Central Time zone. It is a single-code state, so seven-digit local dialing may still work in many places.
| Code | Main city | Type | Status |
|---|---|---|---|
| 314 | St. Louis | Geographic | In service |
| 417 | Springfield | Geographic | In service |
| 573 | Columbia | Geographic | In service |
| 636 | O'Fallon | Geographic | In service |
| 660 | Sedalia | Geographic | In service |
| 816 | Kansas City | Geographic | In service |
Area codes and dialing in Missouri
Missouri's 6 area codes mix older geographic codes with newer overlays. The busiest metros — around Columbia, Kansas City, O'Fallon — carry the most numbers and rely on overlays, which is why dialing rules vary by area. Quieter parts of the state may still use a single code. The original code in the Missouri list is 314 (St. Louis).
Whenever a Missouri region runs low on numbers, a new overlay is added on top rather than splitting the map, so existing customers keep their numbers. See 10-digit dialing for what that means in practice, or the newest area codes for upcoming changes.
Browse Missouri another way
Explore by Midwest region, by time zone, or jump to the city index. You can also see the complete numeric list of every US area code.
Quick answers
Missouri area code FAQ
How many area codes does Missouri have?
Missouri currently has 6 area codes: 314, 417, 573, 636, 660, 816.
What is the main area code for Missouri?
The busiest metro in Missouri is served by the 314 code. Major cities include Columbia, Kansas City, O'Fallon, Sedalia, Springfield.
Does Missouri require 10-digit dialing?
Much of the state still permits 7-digit local calls, though 10-digit dialing always works. Ten-digit dialing is the national standard.