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Table 31 Data Declaration

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Number and Rate of Arrests by Population Group, 2010

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 2010. 
  • 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 2010. 
  • 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

For the 2010 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 2009 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 2009 Census population estimate to derive the agency’s 2010 population estimate.

Population groups

The UCR Program uses the following population group designations:

Population GroupPolitical LabelPopulation Range
I City 250,000 and more
II City 100,000 to 249,999
III City 50,000 to 99,999
IV City 29,000 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.