Table 15, Data Declaration

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Crime Trends
Additional Information About Selected Offenses
by Population Group, 2006-2007

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

General comments

This 2-year trend table provides the 2006 and 2007 breakdowns (such as weapons, type of entry, attempts, and property types for the offenses of forcible rape, robbery, aggravated assault, burglary, motor vehicle theft, and arson) and the percent change between these 2 years.
Suburban area includes law enforcement agencies in cities with less than 50,000 inhabitants and county law enforcement agencies that are within a Metropolitan Statistical Area.
Suburban area excludes 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 2006 and 2007.
In calculating trends, the UCR Program includes only common reported months for individual agencies.

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
VI	City^{1, 2}	Less than 10,000
VIII (Nonmetropolitan County)	County²	N/A
IX (Metropolitan County)	County²	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 2007 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 2006 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 2006 Census population estimate to derive the agency’s 2007 population estimate.

If you have questions about this table

Contact the FBI's Criminal Justice Information Services Division via e-mail at cjis_comm@leo.gov or by telephone at (304) 625-4995.