What Is a 664 Police Code? 664 Police Code

The 664 police code meaning for the police forces is Attempted Murder.

If you’re wondering what is 664 police code, you’re not alone. Many people encounter this number on police scanners, crime reports, or in television shows and want to understand its real meaning. The 664 police code is a shorthand used by law enforcement to indicate a serious criminal offense — Attempted Murder.

Understanding California Police Codes

California police codes, including 664, originated from a system known as the APCO Ten Signals, introduced in 1937. These codes were developed to ensure quick and efficient communication between officers, especially during high-pressure situations.

What Is Attempted Murder? | Police Code 664

Attempted murder is defined as the unlawful attempt to kill another person, where the perpetrator has taken direct steps toward committing the act but the victim survives. It’s considered a violent felony and is punished severely under California law. The use of Police Code 664 in this context helps officers quickly convey the seriousness of the crime in progress or under investigation.

Why Do Police Use the 664 Code?

The use of the 664 police code helps officers and dispatchers communicate sensitive and potentially dangerous situations discreetly and efficiently. For example, during a radio call, saying “664/187 in progress” allows officers to know they’re dealing with an attempted homicide without alarming the public or wasting precious seconds on lengthy explanations.

What Is 664 Police Code?

The 664 police code refers to an attempt to commit a criminal act, most often associated with attempted murder. Understanding these police codes offers insight into law enforcement procedures and helps decode the often cryptic language used in police communications. Whether you’re listening to a scanner, watching a crime show, or reading a police report, knowing the meaning of 664 Police Code can help you stay informed.

Main Police Codes
Alphabet For Police
California Penal Codes
Emergency Response Codes
Police 10 Codes
Police 11 Codes
Police Abbreviations
Police Nicknames
Police Radio Codes
Police Scanner Codes
Texas Penal Codes

Your Ultimate Guide to Police Codes: Explore the Meaning Behind 664 Police Code and More

Welcome to All Police Codes, your complete and trusted source for everything related to police codes and signals across the United States. Whether you’re a curious enthusiast, a student of law enforcement procedures, or someone simply wanting to understand what the 664 police code means, you’ve come to the right place.

Our website is a comprehensive and growing resource designed to help you discover, learn, and understand police radio codes used by law enforcement agencies nationwide. From common 10-codes to specialized numeric signals like the 664 code, our mission is to break down these codes in a way that’s easy to grasp for everyone.

We’ve been researching and following police communication systems for years. These codes play a vital role in how emergency services—such as police, firefighters, and paramedics—communicate efficiently and effectively. Using standard codes reduces the time it takes to relay critical information, helping first responders act swiftly in emergency situations. It’s no exaggeration to say that police radio codes save lives every single day.

What is the 664 Police Code?

The 664 Police Code is one of many standardized signals used daily in emergency communications. While its meaning may vary slightly by jurisdiction, it typically indicates an attempted crime, such as attempted murder or attempted theft, depending on the local police department’s coding system. You can listen to 664 police code in real-time using a police scanner app or radio frequency scanner, giving you a behind-the-scenes look at how officers operate in the field.

The History of Police Codes in the USA

The origins of police codes date back to the late 1930s. Between 1937 and 1940, the Association of Public-Safety Communications Officials-International (APCO) began developing radio communication codes for law enforcement. These were later expanded in 1974 to include the widely adopted 10-codes, which helped standardize police communications across jurisdictions.

Interestingly, the foundation for these brevity codes can be traced to Morse code procedures used by the U.S. Navy. In June 1935, APCO proposed adapting these Navy signals for voice communication, setting the stage for the modern police codes we know today.

Common Police Radio Codes You Should Know

Among the most frequently used police codes is the 10-7 code, which means “out of service.” This is often followed by the 10-42 code, signifying an officer’s “end of tour of duty.” These radio calls are especially significant when an officer retires or, in solemn cases, falls in the line of duty.

Why We Created This Website

At All Police Codes, our passion for emergency response communication runs deep. This website is a free educational resource for anyone interested in learning about the codes that keep our communities safe. We maintain and update this platform because we admire the work of first responders and believe in making this knowledge accessible to all.

To support our ongoing operations and cover hosting and maintenance costs, we display relevant advertisements on the site. However, access to our police code database remains 100% free, with no subscriptions or paywalls.

Start Exploring Police Codes Today

Dive into our extensive guide on U.S. police codes, starting with the 664 Police Code, and unlock a deeper understanding of law enforcement communications. Whether you’re preparing for a career in law enforcement, studying criminal justice, or just curious, this site is your go-to hub for police scanner codes, 10-codes, emergency radio signals, and much more.

Discover more about Police Codes