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Federal Bureau of Investigation Federal Bureau of Investigation

Table 31 - Data Declaration

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Table 31, Data Declaration

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Number and Rate of Arrests by Population Group, 2011

The FBI collects these data through the Uniform Crime Reporting (UCR) Program.

General comments

  • This table provides the number of persons arrested and the arrest rate per 100,000 inhabitants for the eight UCR population groups (see below), U.S. cities as a whole, and for the Nation in 2011.
  • 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 law enforcement agencies submitting 12 months of arrest data for 2011.
  • The FBI derived the arrest rates by first dividing the total aggregated arrests by the aggregated populations covered by contributing agencies and then multiplying the resulting figure by 100,000.
  • The FBI publishes only data that conform to UCR data collection guidelines.  The data collection methodology for arrests for forcible rape used by the state UCR Program administered by the Minnesota Department of Public Safety (with the exception of Minneapolis and St. Paul) does not comply with these guidelines.  Therefore, arrests for forcible rape for Minnesota are not available for inclusion in this table.  Instead, the FBI computed the number and the rate by estimating the forcible rape arrests for each population group for participating agencies in Minnesota.  The figures were estimated using the national forcible rape numbers for each population group applied to the population by group for Minnesota agencies.

Population estimation

The FBI calculated 2011 state growth rates using the U.S. Census Bureau’s 2010 decennial state/national population figures and 2011 provisional state/national population estimates.  The FBI then estimated population figures for city jurisdictions by applying the 2011 state growth rate to the 2010 U.S. Census Bureau data.

Population groups

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

1Includes universities and colleges to which no population is attributed.
2Includes state police to which no population is attributed.