Hannibal, MO Area Codes
Hannibal is served by area code 573. It is in Missouri, Marion County. About 21,489 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 573 |
| State / province | Missouri |
| County | Marion County |
| Population | 21,489 |
| ZIP codes | 1 |
| Time zone | Central |
| Coordinates | 39.6899, -91.4663 |
What area code is Hannibal in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 573 | Missouri | 1,177,656 | — |
ZIP codes in the code footprint
Nearby towns and their area codes
How to dial
Dial 573 + 7 digits for a number in Hannibal, or +1 573 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.