FBI - "The FBI doesn’t just solve cases and prevent attacks. We also provide a range of services and resources to our many partners and to the general public. That includes crime statistics, criminal background checks, laboratory services, training, victim assistance, and more."
CRIME Statistics by: State and Local
Sourcebook of Criminal Justice Statistics - The Sourcebook of Criminal Justice Statistics brings together data from more than 100 published and unpublished sources about many aspects of criminal justice in the United States.