Local Freq is a great application that uses the Radio Reference database to show you the local police, fire, ambulance and business scanner frequencies on your iPhone or iPod.
Search based on Location (Improved)
Enter zip code if using a iPod Touch (New)
Enter zip code if you want to check another county (New)
Uses the great Radio Reference web interface
Includes all 50 states
Scanner frequencies are updated and maintained by Radio Reference
Cool Ham Stuff is not affiliated with RadioReference.com