NCJ Number
238647
Date Published
July 2011
Length
107 pages
Annotation
After explaining Montana's system for collecting and reporting crime-related data, this report presents data related to adult and juvenile crime in Montana for 2009-2010.
Abstract
Montana has implemented a Montana-specific version of the National Incident-Based Reporting System (NIBRS). The Montana Incident-Based reporting System (MTIBRS) differs from the NIBRS in several key areas. One difference is that the MTIBRS collects just over 46 Montana-specific Group A crimes; whereas, the NIBRS requires offense information on 22 general crime categories. In addition, the MTIBRS collects all information for the 10 Group B crimes; whereas, the NIBRS collects only the arrest data on 11 Group B crimes. The current report is based primarily on data from the MTIBRS. A list of the data fields in the MTIBRS system is presented. The 2010 violent crime rate for Montana's non-Tribal jurisdictions decreased approximately 7 percent compared to 2009. Aggravated assault continues to be the most commonly reported violent crime, accounting for just over 75 percent of all violent index crimes reported. Rape is the second most commonly reported violent crime; as a proportion of all violent index crimes, this figure has remained steady. The property crime rate in 2010 for Montana's non-Tribal jurisdictions was down approximately 2 percent compared to 2009. The property crime rate has declined 5 out of the last 6 years and is down dramatically (52 percent) from its peak in 1998. Data are presented on victims and arrestees for various offenses. Data are also provided for offenses known to have been committed by juveniles. Extensive tables and figures