If available, see below for a list of known police frequencies for Hannibal, Texas. Or, navigate to another city or town within Erath County, to view the local police frequencies.
| Alexander | Bluff Dale | Bunyan | Chalk Mountain | |
| Clairette | Dublin | Edna Hill | Hannibal | |
| Harbin | Huckabay | Lingleville | Morgan Mill | |
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| Mount Airy | Oak Dale | Purves | Selden | |
| Stephenville | Three Way | Thurber | ||
Detect police activity and stay ticket-free in Hannibal, Texas with these police radar detectors.