Crime Index rates*

Updated 10/18/19 – *Note that this measure is also a social & physical determinant of health

While only about a third of all crime is reported, the Crime Index is the most commonly used measure of crime and is a consistent sample that allows for national comparisons. For 2018 (most recent year available), Washoe County most indexed crimes decreased or stayed close to the same rate, while rape increased.


  • In 2018, the FBI’s UCR program transitioned from its legacy data collection system to a newer UCR-Tech Refresh (UCR-TR) collection & publishing platform. The change in the computing platform may result in differences in UCR data from previous years, and caution should be used when analyzing data. Differences may be due to technical and procedural easons rather than increases or decreases in crime.
  • Starting in 2016, Nevada’s population used US Census estimates; prior year reports used estimates by the Nevada Demographer

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In June 2004, the CJIS APB approved discontinuing the use of the Crime Index in the Uniform Crime Reporting (UCR) Program and its publications and directed the FBI to publish a violent crime total and a property crime total until a more viable index is developed. The Crime Index was first published in Crime in the United States in 1960. Changes were made in the 1970’s and the Modified Crime Index was the number of Crime Index offenses plus arson. The Crime Index and Modified Crime Index were driven upward by the offense with the highest number. Larceny-theft makes up almost 60% of reported crime, and thus the sheer volume of those offenses overshadow more serious but less frequently committed offenses. The consensus of many groups studying these measures was that the Crime Index and Modified Crime Index no longer served their original purpose, that the UCR Program should suspend their use, and that a more robust index should be developed. FBI Crime Index

Which specific crimes are reported to the UCR Program, and why were these crimes identified for reporting? The UCR Program collects offense information for murder and non-negligent manslaughter, forcible rape, robbery, aggravated assault, burglary, larceny-theft, motor vehicle theft, and arson. These are Part I offenses and are serious crimes by nature and/or volume. Not all crimes, such as embezzlement, are readily brought to the attention of the police. Also, some serious crimes, such as kidnapping, occur infrequently. Therefore, the UCR Program limits the reporting of offenses known to the eight selected crime classifications because they are the crimes most likely to be reported and most likely to occur with sufficient frequency to provide an adequate basis for comparison. FBI Unified Crime Reporting


Nevada Department of Public Safety

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