Grundy County Sheriff
Grundy, Illinois
How we verified this
A dated RadioReference forum post (Jan 7, 2026) reports Grundy County and Morris moved from TGs 2429/2430 to TGs 36029/36030 marked 'ENC' with only fire remaining open, indicating encrypted sheriff dispatch — broader than the listed tactical-only scope; the RR county db shows only a clear conventional backup frequency.
Encryption Details
Verified Talkgroup Data
Grundy County Context
Grundy County is a mixed picture: 1 of 5 agencies we track here are fully encrypted (20%), which means some neighboring departments are still audible on a scanner.
See every agency we track in Grundy County → County encryption overview →
What This Means
The encryption here is targeted at tactical traffic rather than everything. Regular dispatch can still come through, which makes this a narrower restriction than a full lockout.
Frequently Asked Questions
Is Grundy County Sheriff radio encrypted?
Yes — Grundy County Sheriff's radio system runs on P25 AES-256 encryption. The encryption here is targeted at tactical traffic rather than everything. Regular dispatch can still come through, which makes this a narrower restriction than a full lockout.
Can I listen to Grundy County Sheriff on a police scanner?
Partially. Grundy County Sheriff encrypts its tactical channels, so some channels may still be accessible. Check RadioReference for specific talkgroup status.
Why did Grundy County Sheriff encrypt their radio?
Officer safety and operational security are the reasons agencies give. What rarely comes with that explanation is Grundy County-specific evidence that open communications ever caused a problem, while the loss of public oversight and the friction with still-unencrypted neighboring agencies are both immediate and real.
Can Grundy County reverse the encryption decision?
Yes. Whoever made this call for Grundy County Sheriff can also unmake it; there's no technical lock-in. The approach that has worked elsewhere combines public-records requests, direct council pressure, and a coordinated local coalition.
What can I do about Grundy County Sheriff encryption?
Contact the officials who oversee Grundy County Sheriff's budget directly and ask why full encryption was chosen over partial alternatives. Pair that with a FOIA request for recordings and policy records, and look for an existing coalition in Grundy County, or start one, since agencies respond differently to organized, sustained pressure than to individual complaints.