Performance Metrics
NIBRS Crime
Arlington has historically reported crime data using the Uniform Crime Report or (UCR) in Summary format. In 2017, the Arlington
Police Department transitioned from Summary format to the National Incident-Based Reporting System or NIBRS. While the
department still publishes Summary UCR reports, the Police Department also began publishing NIBRS reports in 2018. Texas DPS
mandated all agencies to transition to NIBRS reporting by 2021. Due to the distinct differences outlined below, it is important for
the audience to know that the two cannot be compared to one another.
Summary Reporting System
National Incident-Based Reporting System
Summary UCR consists of eight Part I Offenses which are
divided into two categories: Violent and Property Crime.
Violent Crime includes aggravated assault, forcible rape,
murder, and robbery. Property Crime includes arson, burglary,
larceny-theft and motor vehicle theft.
NIBRS has 46 Group A Offenses compared to Summary
UCR’s eight Part I Offenses. NIBRS is structured to improve
the methodology used in compiling, analyzing, auditing and
publishing collected crime stats. Like Summary UCR, NIBRS
reports crime against persons and crime against property.
However, NIBRS has a third category, crime against society.
UCR Summary Facts:
NIBRS Facts:
• Provides monthly aggregate crime counts for eight index
crimes called Part I Crime.
• Records crimes against persons and property. • Provides individual incident records for eight index crimes
and 38 other offenses, which are called Group A Offenses.
• Records one offense per incident. • Records crimes against persons, property, and society.
• Does not distinguish between attempted and completed
crimes. • Records each offense occurring within an incident.
• Typically records the most serious offense in an incident
(known as the hierarchy rule). • Does not use the hierarchy rule.
• Distinguishes between attempted and completed crimes.
• Dynamic reporting, can change as case evolves.
NIBRS CRIME DATA
2019
Total Crime:
29,771
offenses
Down 1%
from 2018
Crimes Against
Persons: Crimes Against
Property: Crimes Against
Society:
2019 offenses 8,067 16,767 4,937
Percent change from 2018 +3% -4% +2%
Arlington, Texas Police Department |
69