If available, see below for a list of known police frequencies for La Harpe, Illinois. Or, navigate to another city or town within Hancock County, to view the local police frequencies.
| Augusta | Basco | Bentley | Bowen | |
| Carthage | Dallas City | Elvaston | Ferris | |
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| Hamilton | La Harpe | Nauvoo | Plymouth | |
| Pontoosuc | Warsaw | West Point | ||
Detect police activity and stay ticket-free in La Harpe, Illinois with these police radar detectors.