Midwest region · Central Time
Missouri Area Codes
All 9 area codes serving Missouri, the cities each one covers, and which are overlays. Missouri is served by 9 area codes in the Central Time zone.
Last updated October 1, 2026
Full list
Every Missouri area code
Missouri is served by 9 area codes in the Central Time zone. 3 of these are overlay codes layered over busy metros; the rest are geographic codes.
| Code | Area served | Type | In service |
|---|---|---|---|
| 235 | Eastern and central Missouri outside St. Louis, from Columbia to the Bootheel | Overlay | Since 2024 |
| 314 | St. Louis city and most of St. Louis County in eastern Missouri | Geographic | Since 1947 |
| 417 | Southwestern Missouri including Springfield, Joplin and Branson | Geographic | Since 1950 |
| 557 | St. Louis city and most of St. Louis County in eastern Missouri | Overlay | Since 2022 |
| 573 | Eastern and central Missouri outside St. Louis, from Columbia to the Bootheel | Geographic | Since 1996 |
| 636 | Outer St. Louis suburbs: St. Charles, Jefferson and Franklin counties and west St. Louis County | Geographic | Since 1999 |
| 660 | Northern and west-central rural Missouri outside the Kansas City area | Geographic | Since 1997 |
| 816 | Kansas City, Missouri and its suburbs, plus St. Joseph in northwest Missouri | Geographic | Since 1947 |
| 975 | Kansas City, Missouri and its suburbs, plus St. Joseph in northwest Missouri | Overlay | Since 2023 |
Area codes and dialing in Missouri
Missouri's 9 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 10-digit dialing is required there. Quieter parts of the state may still use a single code. The original code in the Missouri list is 235 (Columbia).
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.
Cities with multiple area codes
These Missouri metros are served by an overlay of two or more codes, so 10-digit dialing applies: Columbia · Kansas City · St. Louis.
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 9 area codes: 235, 314, 417, 557, 573, 636, 660, 816, 975.
What is the main area code for Missouri?
The busiest metro in Missouri is served by the 235 code. Major cities include Columbia, Kansas City, O'Fallon, Sedalia, Springfield.
Does Missouri require 10-digit dialing?
Yes, in its overlay metros you must dial all 10 digits. Ten-digit dialing is the national standard.