Arrests
Metropolitan Counties
Persons Under 15, 18, 21, and 25 Years of Age, 2009
The FBI collects these data through the Uniform Crime Reporting (UCR) Program.
General comments
- This table provides the number of persons arrested in metropolitan counties in 2009 and, of those persons, the number arrested within the following age groups: Under 15, Under 18, Under 21, and Under 25 years. In addition, the table shows the percentage that each age group comprises of the total number of persons arrested for each offense.
- The number of persons arrested, aggregated by age groups, reported by metropolitan county law enforcement agencies is used to derive the national figures presented in Table 41.
- 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 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.