The FBI collects these data through the Uniform Crime Reporting (UCR) Program.
The data used in creating this table were from all law enforcement agencies submitting 12 months of arrest data for both 2008 and 2009.
For the 2009 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 2008 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 2008 Census population estimate to derive the agency’s 2009 population estimate.
Population estimates for 2008 are based on the percent change in the state population from the U.S. Census Bureau’s 2007 revised estimates and 2008 provisional estimates.