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, 2||Less than 10,000|
|VIII (Nonmetropolitan County)||County2||N/A|
|IX (Metropolitan County)||County2||N/A|
1Includes universities and colleges to which no population
2Includes state police to which no population is attributed.
For the 2007 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 2006 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 2006 Census population estimate to derive the agency’s 2007 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.