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.
West Side of Chicago over-time animation (Geo Temporal map). Interesting migration patterns can be seen here.
South Side of Chicago over-time animation.
Over the last two decades CPD’s enforcement of heroin has gone down.