Area Code Search
Central time zone
Current Time in Callao: 12:52 AM
Callao Area Codes
Here is the current list of area codes in Callao, MO. There is currently 1 area code(s) in Callao. Search all the most up-to-date currently used Callao area codes below.
Central time zone
Current Time in Callao: 12:52 AM
| Area Code | State | City | Timezone |
|---|---|---|---|
| 660 | Missouri | Callao | Central |