If available, see below for a list of known police frequencies for San Marcos, Texas. Or, navigate to another city or town within Hays County, to view the local police frequencies.
| Austin | Bear Creek | Buda | Driftwood | |
| Dripping Springs | Hays | Kyle | Mountain City | |
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| Niederwald | San Marcos | Uhland | Wimberley | |
| Woodcreek | ||||
Detect police activity and stay ticket-free in San Marcos, Texas with these police radar detectors.