United States • Police Codes Directory
Police Codes, 10-Codes & Radio Signals by State
Police Code Guide brings together common law enforcement codes used across the United States — including 10-codes, radio signals, and key statute references — in one organized, study-friendly place.
What you can look up here
This site is designed as a neutral, reference-only guide. It does not replace your agency’s official code lists or training materials, but it gives you a clean starting point.
- State police code patterns. See how codes, signals, and shorthand references are commonly organized in each state.
- Universal 10-codes. Review widely recognized 10-codes that appear in many jurisdictions, with notes on how they may vary.
- Key statute categories. Quickly scan common criminal code groupings (assault, property crimes, weapons, DUI, and more).
- Radio procedure notes. High-level reminders on radio etiquette and practices used by many agencies.
Browse police codes by state
Select a state to view its police codes pattern, including 10-codes, radio signals, and key statute categories. Layouts are kept consistent so you can quickly spot what you need.
State pages summarize patterns used by many agencies and training materials. Actual codes, 10-codes, and statute references can vary, especially between state police, county, and municipal departments.