There are two main crime databases maintained by the United States Department of Justice (DOJ): the Bureau of Justice Statistics’ National Crime Victimization Survey (NCVS) and the Federal Bureau of Investigation’s Uniform Crime Report (UCR). Non-fatal violence is reported in the NCVS, which measures rape and sexual assault, robbery, and aggravated and simple assault reported by households surveyed by the U.S. Census Bureau. The UCR tracks similar non-fatal violence, plus murder and non-negligent manslaughter recorded by law enforcement.
There are significant methodological and definitional differences between the NCVS and UCR:
– The NCVS includes estimates of both reported and unreported crimes, while the UCR collects data on crimes recorded by the police.
– The UCR includes homicide, arson, and commercial crimes, while the NCVS does not.
– The UCR excludes simple assault (attacks or attempted attacks without a weapon resulting in either no injury or minor injury) and sexual assault, which are in the NCVS.
– The NCVS data are estimates from a nationally representative sample of U.S. households, but the UCR data are based on the actual counts of offenses reported by law enforcement.
– The NCVS excludes crimes against children under 12 years, persons in institutions, and, possibly, highly mobile populations and the homeless; however, victimizations against these persons may be included in the UCR.
So This resource is intended to help answer your questions in regards to violent crimes.