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Home • Crime in the U.S. • 2013 • Crime in the U.S. 2013 • Tables • Table 15 • Table 15 Data Declaration

Table 15 Data Declaration

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Crime Trends, Additional Information About Selected Offenses by Population Group, 2012-2013

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

Important note about rape data

In 2013, the FBI UCR Program initiated the collection of rape data within the Summary Reporting System under a revised definition. The term “forcible” was removed from the offense name, and the definition changed to the revised UCR definition below.

Legacy UCR definition of rape:  The carnal knowledge of a female forcibly and against her will.

Revised UCR definition of rape:  Penetration, no matter how slight, of the vagina or anus with any body part or object, or oral penetration by a sex organ of another person, without the consent of the victim. 

General comments

  • This 2-year trend table provides the 2012 and 2013 breakdowns (such as attempts, weapons, types of entry, and property types for the offenses of rape, robbery, aggravated assault, burglary, motor vehicle theft, and arson) and the percent change between these 2 years.
  • Suburban areas include law enforcement agencies in cities with less than 50,000 inhabitants and county law enforcement agencies that are within a Metropolitan Statistical Area.
  • Suburban areas exclude all metropolitan agencies associated with a principal city. The agencies associated with suburban areas also appear in other groups within this table.

Methodology

  • The data used in creating this table were from all law enforcement agencies submitting at least 6 common months of complete offense reports with breakdowns for 2012 and 2013.
  • A crime trend represents the percentage change in crime based on data reported in a prior equivalent period. In calculating trends, the UCR Program includes only common reported months for individual agencies.
  • The percent changes shown for the offense of rape are based on data collected under the legacy definition of rape. Because the UCR Program has received only 1 year of rape data based on the newly implemented definition, a 2-year comparison could not be provided. The percent changes shown include converted National Incident-Based Reporting System rape data and data from those states/agencies that reported the legacy definition of rape for both years.

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.

Population estimation

For the 2013 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 2010 decennial population counts and 2011 through 2012 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 2012 Census population estimate to derive the agency’s 2013 population estimate.