Table 1 Data Declaration

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Percent Change, by Population Group

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

General comment

This table provides the percent change in offenses known to law enforcement, by population group, for the first 6 months of 2013 and 2014.

Important note about rape data

In 2013, the FBI UCR Program initiated the collection of rape data under a revised definition and removed the term “forcible” from the offense name. The UCR Program now defines rape as follows:

Rape (revised definition):  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. (This includes the offenses of Rape, Sodomy, and Sexual Assault with an Object as converted from data submitted via the National Incident-Based Reporting System [NIBRS]).

Rape (legacy definition):  The carnal knowledge of a female forcibly and against her will.

Since the implementation of the revised definition of rape in 2013, not all agencies/state UCR programs have had the ability to change their records management systems to accommodate the change. Therefore, this report provides a column for rape (revised definition) and a column for rape (legacy definition). The data shown in the rape (revised definition) column include those from agencies that reported rape under the UCR revised definition for 2013 and 2014 as well as converted data from agencies that reported data for rape, sodomy, and sexual assault with an object via the NIBRS for both years. The data shown in the rape (legacy definition) column include only those agencies that reported rape under the legacy definition via the Summary Reporting System (SRS) for 2013 and 2014; it does not include any converted NIBRS data.

Methodology

The data used in creating this table were from law enforcement agencies submitting 3 to 6 common months of offense reports for 2013 and 2014. If the FBI determines certain variables have created unusual fluctuations in the data, those data are excluded from the tabulations.

The rape figures for those agencies that changed from reporting rape under the legacy definition in 2013 to the UCR revised definition of rape in 2014 are not included in this report. Because the UCR Program has not received two consecutive years of data for rape (legacy definition) or two consecutive years of data for rape (revised definition), the national UCR Program cannot provide a 2-year rape comparison for these agencies. This includes 299 agencies with a total population of 19,680,897 inhabitants.

The percent changes shown for the offense of rape (revised definition) are based on data from those agencies that submitted rape data according to the UCR revised definition for both 2013 and 2014 as well as converted data from agencies that reported data for rape, sodomy, and sexual assault with an object via the NIBRS for both years.

The percent changes shown for the offense of rape (legacy definition) are based only on data from those agencies that submitted rape data according to the legacy definition via the SRS for both years; it does not include converted NIBRS data.

Because rape data reported by all agencies for 2013 and 2014 cannot be aggregated for reasons noted above, the percent changes from one year to the next are calculated with smaller numbers than in recent years. Offenses with fewer counts are often sensitive to minor differences when calculating trends. The following table provides the actual number of reporting agencies and populations covered for each definition of rape. (As previously noted, agencies that submitted data using rape [legacy definition] for 2013 and rape [revised definition] for 2014 are not included in this report.

Population Group

Agencies using revised UCR rape definition

Agencies using legacy UCR rape definition

Agency Count

 

 

Population

Agency Count

Population

Total all agencies

7,430

112,565,985

3,254

90,681,237

1,000,000 and over

1

1,553,153

2

9,745,432

500,000 to 999,999

8

5,547,962

7

4,885,383

250,000 to 499,000

19

6,504,567

17

5,908,971

100,000 to 249,999

77

11,515,610

71

10,388,001

50,000 to 99,999

156

10,820,768

160

11,218,011

25,000 to 49,999

351

11,962,092

248

8,715,920

10,000 to 24,999

834

13,209,269

480

7,697,544

Under 10,000

3,934

12,044,953

1,443

4,853,344

Metropolitan County

789

26,163,679

493

22,510,292

Nonmetropolitan County1

1,261

13,243,932

333

4,758,339

1 Includes state police agencies that report aggregately for the entire state.

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.

If you have questions about this table

Contact the FBI’s Criminal Justice Information Services Division via e-mail at .