Offenses Known
to Law Enforcement

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The FBI’s Uniform Crime Reporting (UCR) Program collects offenses that come to the attention of law enforcement for violent crime and property crime, as well as data regarding clearances of these offenses. In addition, the FBI collects auxiliary data about these offenses (e.g., time of day of burglaries). The expanded offense data also include trends in both crime volume and crime rate per 100,000 inhabitants. Finally, the UCR Program collects expanded homicide data which includes information about homicide victims and offenders, weapons used, the circumstances surrounding the offenses, and justifiable homicides.

Violent crime

Violent crime is composed of four offenses: murder and nonnegligent manslaughter, forcible rape, robbery, and aggravated assault. Violent crimes are defined in the UCR Program as those offenses which involve force or threat of force.

More information about violent crime and an overview of violent crime data for 2009 is provided in the Violent Crime section of this report.

Property crime

Property crime includes the offenses of burglary, larceny-theft, motor vehicle theft, and arson. The object of the theft-type offenses is the taking of money or property, but there is no force or threat of force against the victims.

More information about property crime and an overview of property crime data for 2009 is provided in the Property Crime section of this report.

Clearances

Within the UCR Program, law enforcement agencies can clear, or “close,” offenses in one of two ways: by arrest or by exceptional means. Agencies may administratively close a case, but this does not necessarily mean that the agency can clear the offense for UCR purposes.

More information about the criteria used to clear an offense for UCR purposes and an overview of clearance data for 2009 is provided in the Clearances section of this report.

Expanded offense data

The FBI collects the number of offenses for the crimes of murder and nonnegligent manslaughter, forcible rape, robbery, aggravated assault, burglary, larceny-theft, motor vehicle theft, and arson through the UCR Program. In addition to the number of offenses known to the police, the FBI also collects additional data about these offenses, such as the locations of robberies, time of day of burglaries, and types of larcenies. These expanded data include 2-year trends concerning additional information about select offenses (e.g., type of weapon), 2-year trends for crime volumes, and current year crime rates per 100,000 inhabitants.

More information about expanded offense data is provided in the Expanded Offense Data section of this report.

Expanded homicide data

The expanded homicide data section of this Web publication provides information regarding the age, sex, and race of the murder victim and the offender; the type of weapon used in the murder; the relationship of the victim to the offender; and the circumstance surrounding the incident. These data also include information about justifiable homicides.

More information about expanded homicide data is provided in the Expanded Homicide Data section of this report.

What you won't find on this page:

Arrest information for offenses known to law enforcement.