Missouri Area Codes: Complete List With Cities Served
Missouri is served by 7 area codes. Below is each code with the main cities it serves, plus tips for formatting phone numbers in test data.
Missouri area code list
| Area code | Main places served |
|---|---|
| 314 | Saint Louis, Florissant, Ballwin and Saint Charles |
| 417 | Springfield, Joplin, Branson and Morrisville |
| 557 | Saint Louis, Florissant, Ballwin and Saint Charles |
| 573 | Jefferson City, Columbia, Cape Girardeau and Rolla |
| 636 | Saint Louis, Ballwin, Saint Charles and Chesterfield |
| 660 | Sedalia, Alexandria, Anabel and Arbela |
| 816 | Kansas City, Independence, Saint Joseph and Lees Summit |
Place names come from ZIP code records linked to each area code, so they show where a code is most common rather than exact boundaries.
Area codes by major city
| City | Area codes |
|---|---|
| Kansas City | 816 |
| Saint Louis | 314, 557, 636 |
| Independence | 816 |
| Springfield | 417 |
| Saint Joseph | 816 |
| Lees Summit | 816 |
| Columbia | 573, 660 |
| Florissant | 314, 557, 636 |
| Saint Charles | 314, 557, 636 |
| Ballwin | 314, 557, 636 |
| Blue Springs | 816 |
| Cape Girardeau | 573 |
| Chesterfield | 314, 557, 636 |
| Jefferson City | 573 |
| Joplin | 417 |
How to format a Missouri phone number
US numbers have ten digits: the area code, a three-digit exchange and a four-digit line number. A Missouri number is written as (314) 555-0123 for display, or +13145550123 in E.164 format for storage.
Safe numbers for testing
The range 555-0100 to 555-0199 is reserved for fictional use in every area code. Our generator combines these with real local area codes, so test data looks right without reaching a real person.
Why overlays matter for your forms
With overlays, you cannot guess a city from its area code alone, and people who move keep their numbers. Use area codes for display and formatting, not for location checks.
Create realistic Missouri addresses for testing, with real cities, counties and ZIP codes.
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