Missouri area codes
Missouri has 9 active area codes. It started with 2 of the original 1947 codes (314, 816). The newest is 235 (2024).
The busiest codes by active prefixes are 573 (Columbia), 816 (Kansas City), 314 (Saint Louis), 417 (Springfield), 660 (Sedalia) — the remaining 4 cover smaller regions or arrived recently as overlays.
3 overlay complexes operate in Missouri: 235/573, 314/557, 816/975. Inside a complex the codes share territory and local calls take ten digits.
Since 2010 the state has gained 3 codes: 557 (2022), 975 (2023), 235 (2024).
Every Missouri code keeps Central time.
Numbers in the toll-free 8YY family are absent here by design: they carry no state assignment and answer anywhere in the US, Canada and the Caribbean.
Use the per-code pages to go deeper — coverage by locality, full prefix tables for the most-searched codes, and NANPA's capacity forecasts for each.
| Code | Major area | In service | Overlay complex | Prefixes |
|---|---|---|---|---|
| 235 | Birch Tree | 2024 | 235/573 | 30 |
| 314 | Saint Louis | 1947 | 314/557 | 782 |
| 417 | Springfield | 1950 | — | 706 |
| 557 | Saint Louis | 2022 | 314/557 | 66 |
| 573 | Columbia | 1996 | 235/573 | 786 |
| 636 | Saint Charles | 1999 | — | 430 |
| 660 | Sedalia | 1997 | — | 513 |
| 816 | Kansas City | 1947 | 816/975 | 785 |
| 975 | Kansas City | 2023 | 816/975 | 16 |
FAQ
How many area codes does Missouri have?
9 geographic area codes are currently in service: 235, 314, 417, 557, 573, 636, 660, 816, 975.
What was Missouri's first area code?
314, in service since 1947.
Will Missouri get a new area code soon?
Likely: NANPA projects 417 to exhaust its capacity in 2Q 2032, and relief overlays are planned years in advance.
Which time zone are Missouri numbers in?
All Missouri area codes are in the Central time zone.