Table 1 Data Declaration
Percent Change, by Population Group
The FBI collects these data through the Uniform Crime Reporting (UCR) Program.
This table provides the percent change in offenses known to law enforcement, by population group, for the first 6 months of 2017 and 2018.
Important note about rape data
In 2013, the FBI’s UCR Program initiated the collection of rape data under a revised definition within the Summary Reporting System. The term “forcible” was removed from the offense name, and the definition was changed to “penetration, no matter how slight, of the vagina or anus with any body part or object, or oral penetration by a sex organ of another person, without the consent of the victim.”
In 2016, the FBI Director approved the recommendation to discontinue the reporting of rape data using the UCR legacy definition beginning in 2017.
The data used in creating this table were from law enforcement agencies submitting 3 to 6 common months of offense reports for 2017 and 2018. If the FBI determines certain variables have created unusual fluctuations in the data, those data are excluded from the tabulations.
The rape data reported using the UCR legacy definition for either 2017, 2018, or both years are not included in the rape percent change.
For the 2017 population estimates used in this table, the FBI computed individual rates of growth from one year to the next for every city/town and county using 2010 decennial population counts and 2011 through 2016 population estimates from the U.S. Census Bureau. Each agency’s rates of growth were averaged; that average was then applied and added to its 2016 census population estimate to derive the agency’s 2017 population estimate.
If you have questions about this table
Contact the FBI’s Criminal Justice Information Services Division via e-mail at firstname.lastname@example.org.