Missouri Area Codes

How Missouri Got Its Area Codes

Missouri went from 2 area codes in 1947 to 9 today. A split carves territory off its parent; an overlay sits on top of it, which is why newer codes need ten-digit dialling.

1. 1947314one of the original 1947 area codes
2. 1947816one of the original 1947 area codes
3. 1950417in service; no parent code on record
4. 1996573split from 314
5. 1997660split from 816
6. 1999636split from 314
7. 2022557overlaid 314
8. 2023975overlaid 816
9. 2024235overlaid 573

Dates from the NANPA area code report, 09/19/2026.

Missouri Call Routing Regions

Missouri spans 10 LATAs — the regions a call is routed within before it becomes long-haul.

• 520395 rate centres
• 524378 rate centres
• 528274 rate centres
• 632320 rate centres
• 532295 rate centres
• 644221 rate centres
• 522171 rate centres
• 52654 rate centres
• 634133 rate centres
• 52129 rate centres

Which Missouri Area Code Covers a City?

Missouri has more than one area code in most regions. Enter a city to see which codes serve it, or check a specific number instead.