If available, see below for a list of known police frequencies for Union, Iowa. Or, navigate to another city or town within Hardin County, to view the local police frequencies.
| Ackley | Alden | Buckeye | Eldora | |
| Hubbard | Iowa Falls | New Providence | Owasa | |
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| Radcliffe | Steamboat Rock | Union | Whitten | |
Detect police activity and stay ticket-free in Union, Iowa with these police radar detectors.