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57 Police Departments
21 Sheriff Offices
16 Fire Departments
2 EMS Agencies
Fully Encrypted 85 agencies (80%)
Partially Encrypted 21 agencies (20%)
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RadioReference Verification

85 Verified Agencies
80%
+
5 Discovered via RadioReference
📡
1,856 Documented Talkgroups
554 encrypted 16 mixed Browse →
Showing 106 of 106 agencies
Agency Name County Type Encryption Scope
Adams Sheriff P25 AES-256 Partially Encrypted
Arapahoe Police P25 ADP Fully Encrypted
Arapahoe Sheriff P25 ADP Tactical Only
Fremont Ems P25 ADP Fully Encrypted
Adams/Jefferson Police P25 AES Fully Encrypted
Denver Police P25 AES Fully Encrypted
Adams/Arapahoe/Douglas Police P25 AES Fully Encrypted
Pueblo Police P25 ADP Fully Encrypted
Bent Sheriff P25 ADP Fully Encrypted
Broomfield Police P25 AES-256 Fully Encrypted
Adams/Arapahoe/Douglas Other P25 AES-256 Partially Encrypted
Fremont Fire P25 ADP Fully Encrypted
Fremont Police P25 ADP Fully Encrypted
Garfield Police P25 ADP Fully Encrypted
Douglas Police P25 ADP Fully Encrypted
Chafee Fire P25 AES-256 Specific Channels
Chafee Sheriff P25 AES-256 Specific Channels
Arapahoe Police P25 ADP Fully Encrypted
Mesa Police P25 ADP Fully Encrypted
Mesa Police P25 ADP Fully Encrypted
Statewide Other P25 AES-256 Partially Encrypted
El Paso Police P25 AES-256 Fully Encrypted
Larimer Police P25 AES-256 Fully Encrypted
Statewide State P25 AES-256 Partially Encrypted
Arapahoe Police P25 ADP Fully Encrypted
Crowley Sheriff P25 AES-256 Fully Encrypted
Fremont Fire P25 ADP Fully Encrypted
Denver Fire P25 AES Fully Encrypted
Denver Airport P25 AES-256 Fully Encrypted
Denver Transit P25 AES-256 Fully Encrypted
Denver Police P25 AES Fully Encrypted
Douglas Sheriff P25 ADP Tactical Only
Statewide Other P25 AES-256 Fully Encrypted
Jefferson Police P25 ADP Fully Encrypted
Elbert Sheriff P25 ADP Fully Encrypted
Elbert Police P25 ADP Fully Encrypted
El Paso Transit P25 AES-256 Specific Channels
El Paso Sheriff P25 AES-256 Tactical Only
Arapahoe Police P25 ADP Fully Encrypted
Larimer Police P25 ADP Fully Encrypted
Fremont Fire P25 ADP Fully Encrypted
Fremont Police P25 ADP Fully Encrypted
El Paso Military P25 AES-256 Fully Encrypted
Larimer Police P25 ADP Fully Encrypted
Fremont Fire P25 ADP Fully Encrypted
Fremont Sheriff P25 ADP Fully Encrypted
Mesa Police P25 ADP Fully Encrypted
Garfield Sheriff P25 ADP Partially Encrypted
Gllpin Sheriff P25 ADP Tactical Only
Arapahoe Police P25 ADP Fully Encrypted
Garfield Police P25 ADP Fully Encrypted
Jefferson Police P25 ADP Fully Encrypted
Statewide Other P25 AES-256 Specific Channels
Grand Sheriff P25 ADP Fully Encrypted
Mesa Police P25 ADP Tactical Only
Arapahoe Police P25 ADP Tactical Only
Jefferson Sheriff P25 ADP Fully Encrypted
Kiowa Sheriff P25 ADP Fully Encrypted
Otero Fire P25 ADP Fully Encrypted
Otero Police P25 ADP Fully Encrypted
Jefferson Police P25 ADP Fully Encrypted
Jefferson Police P25 AES Fully Encrypted
Prowers Police P25 AES-256 Fully Encrypted
Larimer Sheriff P25 AES-256 Fully Encrypted
Bent Police P25 AES-256 Fully Encrypted
Arapahoe Police P25 AES-256 Fully Encrypted
Logan Sheriff P25 ADP Fully Encrypted
Douglas Police P25 ADP Fully Encrypted
Boulder/Weld State P25 AES-256 Partially Encrypted
Larimer Fire P25 ADP Fully Encrypted
Larimer Police P25 ADP Fully Encrypted
Rio Blanco Police P25 ADP Fully Encrypted
Mesa Sheriff P25 ADP Fully Encrypted
Moffat Sheriff P25 ADP Partially Encrypted
Montrose Police P25 AES-256 Fully Encrypted
Jefferson Police P25 ADP Fully Encrypted
Jefferson Police P25 ADP Fully Encrypted
Garfield Police P25 ADP Fully Encrypted
Montrose Police P25 AES-256 Fully Encrypted
Garfield Police P25 ADP Fully Encrypted
Park Sheriff P25 ADP Partially Encrypted
Douglas Police P25 ADP Fully Encrypted
Fremont Fire P25 ADP Fully Encrypted
Larimar Fire P25 ADP Fully Encrypted
Pueblo Fire P25 AES-256 Fully Encrypted
Pueblo Police P25 AES-256 Fully Encrypted
Garfield Police P25 ADP Fully Encrypted
Rio Blanco Sheriff P25 ADP Fully Encrypted
Fremont Fire P25 ADP Fully Encrypted
Pueblo Fire P25 ADP Tactical Only
Arapahoe Police P25 ADP Fully Encrypted
Garfield Police P25 ADP Fully Encrypted
Elbert Police P25 ADP Fully Encrypted
Denver Douglas Fire P25 AES-256 Partially Encrypted
Fremont Fire P25 ADP Fully Encrypted
Larimer Police P25 AES-256 Fully Encrypted
Adams/Weld Police P25 AES Fully Encrypted
Fremont Fire P25 ADP Fully Encrypted
Jefferson Police P25 AES-256 Fully Encrypted
Adams/Jefferson Police P25 AES Fully Encrypted
Yuma Ems P25 ADP Fully Encrypted
Denver Police P25 AES-256 Fully Encrypted
Montrose Police P25 AES-256 Partially Encrypted
Park Police P25 AES-256 Fully Encrypted
Pueblo Police P25 AES-256 Fully Encrypted
Grand Sheriff P25 AES Fully Encrypted
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Browse Colorado by County

Search or select a county to see encrypted agencies in that area.

Related Case Study

Learn more about police radio encryption issues in Colorado.

Read Colorado Case Study

Frequently Asked Questions

How many public safety agencies in Colorado are encrypted?

106 agencies in Colorado are documented as encrypted: 85 (80%) fully encrypted and 21 with partial encryption. See the full table below for specific agencies.

Which Colorado agencies have verified encryption data?

85 of the 106 agencies listed here (80%) have been checked directly against the RadioReference API, covering 1,856 documented talkgroups. The rest are sourced from the community-maintained RadioReference Wiki and may be less current.

Which county in Colorado has the most encrypted agencies?

Fremont County leads Colorado with 12 encrypted agencies (100% fully encrypted). Browse the county list below to see how your area compares.

Can I still monitor police scanners anywhere in Colorado?

Yes. 21 agencies in Colorado have only partial encryption, and fire/EMS channels frequently stay open even in counties where police departments have gone dark. Use the filters below to find what's still accessible.

Can Colorado residents get an encryption decision reversed?

Yes — encryption is a local policy decision, not a technical requirement, and it can be revisited. Our Colorado case study covers what has and hasn't worked there so far.

Fight Encryption in Colorado

Join the movement to restore transparency to public safety communications.