Category Archives: Chicago Data

126,241 Heroin Arrests Visualized, Chicago 2001 – 2020

A look into heroin related arrests spanning almost 2 decades. The data is collected by the Chicago Police Department and available at Chicago Data Portal – Public Safety section. Click on static maps below to enlarge and/or play animation.

Full city map of all incidents.

West Side of Chicago. Heroin enforcement in the west side is so dense that city blocks are fully illuminated by incident reports.

West Side of Chicago over-time animation (Geo Temporal map). Interesting migration patterns can be seen here.

South Side of Chicago (2133x2917px).

South Side of Chicago over-time animation.

Over the last two decades CPD’s enforcement of heroin has gone down.

Map of Chicago created by Traffic Crashes 2016 – 2018

Point and heat maps of Chicago created by plotting coordinates of traffic crashes. Time range used, spans from January 2016 through September 2018. The data can be found at data.cityofchicago.org.

Crash data shows information about each traffic crash on city streets within the City of Chicago limits and under the jurisdiction of Chicago Police Department (CPD).

Click on map images below to enlarge.

Chicago narcotics solicitations in public-ways; incident maps

Where will you be offered narcotics in Chicago? Or, where do cops go to do undercover busts.

Crime incident reports are gathered by the Chicago Police Department. The time range spans from 2001 through 2018. The data is from data.cityofchicago.org.

Incident descriptors used:
NARCOTICS – Primary Type
SOLICIT NARCOTICS ON PUBLICWAY – Description

A decline in publicway narcotic solicitations or enforcement can be noticed around 2008.

Chicago’s Prostitution Decline 2001 – 2017 (revisited)

Visualizing the decline of Chicago prostitution from the eyes of the police department. The time range used spans from 2001 through 2017. The data was filtered from data.cityofchicago.org. Below is a Torque/Geo Temporal Map which animates over time using 67,690 total incident reports, each report with a primary crime type of prostitution. Beneath that is a cumulative heat map. And lastly, a map created attempting to show the migration of enforcement over years.

(click to enlarge)

(click to enlarge)

Previous visualization from 2 years ago