Illinois Scanner Frequency Guides

Scanners are legal to own and use anywhere in Illinois, with no permit or registration required. Police scanners are completely legal in Illinois with no restrictions on ownership or use. Read the full Illinois scanner law guide →

56 of the 131 agencies we track in Illinois (43%) have moved to full encryption, meaning dispatch traffic from those departments no longer reaches a scanner at all. The county guides below break down where that access still exists and where it doesn't.