Statistics & Data
The Great Crime Decline
Definition: The sustained, dramatic decrease in crime rates across the United States from the early 1990s peak through the 2010s, one of the most significant social trends in modern American history.
In Detail
The Great Crime Decline refers to the massive, sustained drop in crime rates in the United States beginning in the early 1990s. From the peak in 1991, the national violent crime rate fell by approximately 50% over the following two decades, and property crime rates declined by roughly 60%. This decline was remarkably broad, it occurred across nearly all crime categories, in cities of all sizes, and in all regions of the country. No single explanation fully accounts for the decline, and criminologists continue to debate the relative contributions of various factors. Leading theories include: the end of the crack cocaine epidemic (which had fueled violence in the late 1980s), demographic changes (the aging of the baby boom generation past peak crime years), increased incarceration (more offenders behind bars), improved policing strategies (CompStat, community policing, hot-spot policing), economic growth and low unemployment in the 1990s, the legalization of abortion in 1973 (the Donohue-Levitt hypothesis), reduced lead exposure (lead poisoning is linked to aggression and impulsivity), and technological changes (better security systems, GPS tracking, reduced cash transactions). Most criminologists believe the decline resulted from multiple factors working simultaneously. Understanding the Great Crime Decline is essential context for interpreting CrimeContext data because it means that even cities with rates above the current national average may be significantly safer than the same city was 25 years ago. The decline also sets the baseline for evaluating recent crime fluctuations, the increases seen in some cities during 2020-2021, while concerning, have not reversed the long-term decline.
Related Terms
The direction and rate of change in crime rates over a period of time, showing whether a city or region is becoming safer or more dangerous.
The number of crimes per 100,000 residents in a given area, allowing fair comparison between communities of different sizes.
Offenses that involve force or the threat of force against a person, including murder, robbery, aggravated assault, and rape.
Offenses involving the taking or destruction of property without force or threat of force, including burglary, larceny-theft, motor vehicle theft, and arson.
Frequently Asked Questions
What does "The Great Crime Decline" mean in crime statistics?
The sustained, dramatic decrease in crime rates across the United States from the early 1990s peak through the 2010s, one of the most significant social trends in modern American history.
Why is the great crime decline important for understanding crime data?
The Great Crime Decline refers to the massive, sustained drop in crime rates in the United States beginning in the early 1990s. From the peak in 1991, the national violent crime rate fell by approximately 50% over the following two decades, and property crime rates declined by roughly 60%. This decline was remarkably broad, it occurred across nearly all crime categories, in cities of all sizes, and in all regions of the country.
this entity is one of the U.S. city and county crime rates concepts that recurs across this site. The definition above is the technical answer; the paragraphs below add the practical context for how the concept connects to the the FBI UCR/NIBRS dataset data behind every per-entity page on the site.
In the the FBI UCR/NIBRS dataset data, this concept shapes one or more of the fields that drive the per-entity grades and rankings on this site. The methodology page describes which fields feed into which output; this glossary entry documents the underlying term.
Source: FBI Crime Data Explorer, 2026.