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Crime Patterns in ChicagoTweet


This will hopefully be an ongoing project in which I track various trends in Chicago crime. The goal is to use data visualization to highlight patterns in criminal activity in Chicago. I try to keep text as minimal as possible. All data used is publicly available and sourced. If you find this interesting, a list of related recommendations can be found at the bottom of the page.


Total Crimes Reported in 20111









Total Crimes Reported in 2011 by Time of Day








Total Crimes Reported in 2011 by Day of Week



Days in 2011 with a Statistically Significant Dip in Total Crimes Reported2





Total Crimes Reported in 2011 by Season3



Crime Location Categories4









Crime Location Distribution by Time of Day5









Primary Types of Crime6





Primary Types of Crime by Frequency



Primary Types of Crime by Time of Day







Primary Types of Crime by Month7



Primary Types of Crime by Coordinates






Types of Crime by Community8






Types of Crime by Community Median Income9




Related Recommendations


1. Our America.
2. Everything by Sudhir Venkatesh.
3. Fiction by Michael Harvey.
4. Chicago Police Department GIS.


Sources + Notes


1. Source, data for 2011.
2. Snowpocalypse occurred on Feb 2, 2011 and refers to the ridiculous amount of snow that shut down the city for a couple days. And trust me, it's hard for weather to shut down Chicago.
3. Spring = March, April, May. Summer = June, July, August. Fall = September, October, November. Winter = December, January, February.
4. As defined by the City of Chicago Police Department.
5. For distribution comparison purposes, radii were not held constant. Radii values given are in Total Reported Crimes.
6. As defined by the City of Chicago Police Department.
7. Black bars signify values above the mean.
8. Source, data for 2009.
9. Source and source, crime data for 2009, median income data for 2010. I make the assumption that median income in each community grew by a proportionate amount and therefore, using 2009 and 2010 data is acceptable for the sake of comparison. I mean, I was an economics major, where making broad assumptions is actively encouraged.