Arrest Trends
Metropolitan Counties, 2008-2009
The FBI collects these data through the Uniform Crime Reporting (UCR) Program.
General comments
- This 2-year trend table provides the number of persons arrested in metropolitan counties in 2008 and 2009 and the percent change when the data for these 2 years are compared. The table furnishes a breakdown of these data by juveniles (persons under age 18) and adults.
- The arrests reported by metropolitan county law enforcement agencies are used to derive the national figures presented in Table 36.
- The Metropolitan Counties classification encompasses jurisdictions covered by noncity law enforcement agencies located within currently designated Metropolitan Statistical Areas. (See Area Definitions.)
- The UCR Program collects arrest data for 29 offenses.
- These data represent the number of persons arrested; however, some persons may be arrested more than once during a year. Therefore, the statistics in this table could, in some cases, represent multiple arrests of the same person.
Methodology
The data used in creating this table were from all metropolitan county law enforcement agencies submitting 12 months of arrest data for both 2008 and 2009.
Population estimation
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.