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Cook County, Illinois Crime Statistics

This webpage contains crime figures for Cook County, Illinois. You can examine the breakdown of crime by type, changes to crime numbers over time, and see how Cook County compares to similar locations. If you are interested in seeing public records resources for Cook County, Illinois, you can click the Public Records tab at the top.

Total Crime

Between 1999 and 2008 there were 1,852,512 total crimes reported in Cook County, Illinois (397,753 of them violent). Of the 185,251 crimes that occur a year in Cook County, almost half happen less than a mile from home. On average, someone is a victim of a crime in Cook County, Illinois every 2 minutes.

Crime Trends

During the previous 10 years, crime data were available in Cook County, Illinois for all 10 years. Over that interval, reported crime in Cook County decreased by 37 percent. Over the same time frame, violent crime fell by 57 percent. Overall, the crime numbers reveal a gradual decrease in crime over the last 10 years in Cook County. If the current trend continues, predicted crime numbers could fall to one hundred and forty-five thousand for Cook County, Illinois in 2009.

Crime Trends in Cook County, Illinois (1999-2008)

Remember that these graphs show reported crime figures and some step offs in crime numbers may be the result of changes in reporting, not actual changes in crime rates.

Crime Comparisons

Crime rates per 1,000 population in counties like Cook County, Illinois (1999-2008)

Visitors are cautioned against interpreting ranking data to determine 'how dangerous' a certain location is, as many factors, including episodic events, or differences in crime reporting and methodology can skew rankings. Click on the individual graph bars to see crime figures in these locations.

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Crime Data Information

Cook County, Illinois law enforcement agencies report their statistics to the FBI UCR program. The data reported for Cook County conform to the FBI data quality guidelines. For more information, and a description of the statistical methods and data algorithms used by RecordsPedia, please visit our methodology section.