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|
|VI1, 2||City||Less than 10,000|
|VIII (Nonmetropolitan County)2||County||N/A|
|IX (Metropolitan County)2||County||N/A|
For the 2008 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 2000 decennial population counts and 2001 through 2007 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 2007 Census population estimate to derive the agency’s 2008 population estimate.
Contact the FBI's Criminal Justice Information Services Division via e-mail at firstname.lastname@example.org or by telephone at (304) 625-4995.