Dupage County, Illinois: Police Scanner Guide
Dupage County has significant unencrypted radio traffic. A digital scanner gives you broad coverage of police, fire, and EMS channels.
What You Can Still Monitor in Dupage County
- Fire and EMS dispatch
- NOAA Weather Radio
- Public works channels
Recommended Scanners for Dupage County
Affiliate Some links go to Amazon and earn us a small commission. Our picks are editorial; revenue funds advocacy, not recommendations.
Agencies in Dupage County
Data from the RadioReference database and direct verification. View all Illinois agencies →
| Agency | Type | Encryption |
|---|---|---|
| DuPage County Police | police | P25 AES-256 |
| DuPage County Sheriff's Office | sheriff | P25 AES-256 |
| Naperville Police | police | P25 AES-256 |
Frequently Asked Questions
What can I monitor in Dupage County, Illinois?
Dupage County has significant unencrypted radio traffic. A digital scanner gives you broad coverage of police, fire, and EMS channels. Check the local fire and EMS frequencies which often remain unencrypted even when police go encrypted.
Is police radio encrypted in Dupage County?
Police radio in Dupage County is not fully encrypted. Most agencies use open or mixed radio systems that can be monitored with a digital scanner.
What scanner do I need for Dupage County?
For Dupage County's mix of digital and analog traffic, you need a P25-capable scanner. The Uniden BCD436HP decodes both P25 Phase I and Phase II, which covers most modern trunked systems.