- Police Departments (175 agencies)
- Sheriff Offices (104 agencies)
- County Jails (96 agencies)
- Campus Police (58 agencies)
- Parole & Probation (50 agencies)
- Federal Agencies (41 agencies)
- Military Police (34 agencies)
- Adult Institutions (34 agencies)
- State Police Agencies (21 agencies)
- National Parks (13 agencies)
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- Airport Police (8 agencies)
- State Agencies (4 agencies)
- Youth Institutions (3 agencies)
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- Railroad Police (2 agencies)
- Harbor Police (1 agencies)
- Conservation Agencies (1 agencies)
- Child Support Enforcement (1 agencies)
- Coroners (1 agencies)
- Transit Authority (1 agencies)
