The Uniform Crime Reporting (UCR) Program is a nationwide, cooperative statistical effort of more than 17,000 city, university and college, county, State, tribal, and Federal law enforcement agencies reporting data on crimes brought to their attention. During 2004, law enforcement agencies active in the UCR Program represented 94.2 percent of the total population. The UCR Program’s primary objective is to generate reliable information for use in law enforcement administration, operation, and management. Eight main offense classifications, known as Part I crimes were chosen to gauge the state of crime in the United States: (1) violent crimes of murder and nonnegligent manslaughter, forcible rape, robbery, and aggravated assault and (2) property crimes of burglary, larceny-theft, motor vehicle theft, and arson. Additionally, informational data is presented on hate crime. The report is divided into six main sections that include: (1) a summary of the UCR Program; (2) offenses reported (Part I crimes); (3) offenses cleared; (4) persons arrested; (5) special reports on arrest of juveniles for drug abuse violations from 1994 to 2003 and an exploratory study of infant victims; and (6) law enforcement personnel. Appendixes I-VII