660 area code — Sedalia, MO geographic
660 is the area code for Sedalia, Missouri, in service since October 12, 1997, Central time. Note that porting and VoIP mean a 660 number can be used from anywhere — the code marks where the number was assigned.
513 central-office prefixes are currently active in this code, spread across 53 code-holding carriers. Thousands-block pooling applies to 403 prefixes, so a single prefix can belong to several carriers. Its prefixes map to 224 distinct rate centers.
If a 660 call asks for money or personal data, treat the displayed number as unverified: hang up and reach the organization through its published number. Numbering data locates numbers, not callers.
Among Missouri codes, 660 stands out as covers more rate centers (224) than any other Missouri area code.
Dialing: 10D locally, 10D to other codes (1+10 digit permissible at service provider discretion.).
NANPA projects numbering capacity to exhaust in 2Q 2103.
660 was created from 816 in 1997.
Largest localities in 660
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Sedalia | 23 | — |
| Kirksville | 15 | — |
| Warrensburg | 14 | — |
| Clinton | 11 | — |
| Maryville | 10 | — |
| Moberly | 10 | — |
| Marshall | 9 | — |
| Chillicothe | 9 | — |
| Butler | 6 | — |
| Warsaw | 6 | — |
FAQ
Is 660 a toll-free number?
No. 660 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Will 660 run out of numbers?
NANPA's current forecast projects exhaust in 2Q 2103 — decades of capacity remain.
Why am I getting spam calls from 660 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 660 number does not prove the call originated there — see our guide to spotting spoofed calls.