Welcome to the IBRRC

The Justice Research and Statistics Association's Incident-Based Reporting Resource Center facilitates the use of state incident-based reporting (IBR) systems and the National Incident-Based Reporting System (NIBRS) by crime analysts, researchers, and other justice professionals. The reports and analyses featured on this website demonstrate how incident-based data can be analyzed to address a wide variety of criminal justice policy questions and support evidence-based decision making.

In 2012, BJS announced its NCS-X initiative , which is designed to increase participation in NIBRS so that it will have the coverage to generate statistically-sound national estimates of crime known to law enforcement agencies. Through NCS-X, BJS will provide funding and technical assistance to selected local, state, and tribal law enforcement agencies and to state UCR programs to enable them to report NIBRS data.

IBRRC is supported by the Bureau of Justice Statistics.


FBI Director James B. Comey Endorses NIBRS
FBI Director James B. Comey endorsed the use of NIBRS. In his address to National Organization of Black Law Enforcement Executives (NOBLE) Director Comey stated that he believes "NIBRS is the pathway to better data." Currently, 33 states are certified to report data via the NIBRS, and 16 of these states include agencies that report all of their crime statistics through the incident-based reports.


IACP, MCC, NSA, and MCSA Issue a Joint Press Release in Support of NIBRS (.PDF)
In a joint statement IACP, MCC, NSA, and MCSA expressed support for modernizing nationwide crime reporting to more accurately reflect current crime and related activities, transitioning from UCR to NIBRS for all law enforcement agencies, and the retirement of the summary reporting system.

NCS-X Logo

National Crime Statistics Exchange (NCS-X): Building on NIBRS for More Accurate National Crime Estimates
In this article BJS Deputy Director Howard Snyder provides a brief history of crime reporting efforts including UCR and NIBRS and the current status of the National Crime Statistics Exchange (NCS-X). NCS-X is a program designed to generate nationally-representative incident-based data on crimes reported to law enforcement agencies.

IACP Brief

IACP Informational Brief on NCS-X
The International Association of Chiefs of Police has created a brief on NCS-X. It includes an overview of the program, a description of how NCS-X will impact agencies, and Frequently Asked Questions (FAQs).


How Many Agencies in Your State Participate in NIBRS? (.PDF)
Based on 2013 data submissions, the FBI UCR Program has certified 33 states to report data via the NIBRS. Of the 33 certified states, 15 states submit all their crime data via the NIBRS.


Is Your Agency Ready for NIBRS? Take the NCS-X NIBRS Readiness Assessment
This readiness assessment will aid in the assessment of the capabilities and barriers that exist in your agency with regards to collecting and reporting crime incident data according to the FBI's NIBRS standard.

If you have data, syntax, documentation, or examples you'd like to contribute, please contact us.

Background and Status of Incident-Based
Reporting & NIBRS

What is Incident-Based Reporting?
What is NIBRS?
Advantages of Incident-Based Reporting Over Summary Reporting
Comparison of NIBRS and UCR Definitions
Smart NIBRS Decision-Making
Steps for Developing NIBRS
Status of NIBRS in the States
IBRRC Factsheet

Using IBR & NIBRS Data

Availability of IBR Data
Preparing Data for Analysis
Tips and Shortcuts for Working with NIBRS
Data Quality
Analyzing Incident-Based Data
Mapping Incident-Based Data

Reports & Projects

IBR Resource Center Reports Using State Data
State Projects
State Mapping Projects
IBR and NIBRS Annotated Bibliography and Mapping Resources
Links to Related Sites and References

State Profiles


Syntax & Sample Data

Download SPSS Code
Download SAS Code
Download Sample SPSS Data