The FBI collects these data through the Uniform Crime Reporting (UCR) Program.
The UCR Program uses the following population group designations:
|Population Group||Political Label||Population Range|
|I||City||250,000 and more|
|II||City||100,000 to 249,999|
|III||City||50,000 to 99,999|
|IV||City||25,000 to 49,999|
|V||City||10,000 to 24,999|
|VI||City1||Less than 10,000|
|VIII (Nonmetropolitan County)||County2||N/A|
|IX (Metropolitan County)||County2||N/A|
The FBI calculated 2006 state growth rates using revised 2005 state/national population estimates and 2006 provisional state/national population estimates provided by the U.S. Census Bureau. The FBI then estimated population figures for city and county jurisdictions by applying the 2006 state growth rate to the updated 2005 U.S. Census Bureau data.
Contact the FBI's Criminal Justice Information Services Division via e-mail at firstname.lastname@example.org or by telephone at (304) 625-4995.