Tuesday, August 27, 2013

ALL GROWED UP: Interactive Maps Plot 2013, 2003 Robberies

Online now are two interactive maps from CWB.
Click here for the 2003 interactive map.  Click here for the 2013 interactive map.
The first map plots every robbery reported to police from July 20 to August 19, 2013, in the area between Irving Park Road, Belmont, Southport, and Lake Michigan. That's the area covered by today's police beats 1923, 1924, and 1925*.

The second interactive map plots robberies during the same period a decade earlier, July 20 to August 19, 2003.

You can zoom in, zoom out, and click on each marker for details about the crime(s). Some markers in 2013 represent multiple crimes in the same location.

We wanted to label all of this year's robberies with letters like 2003's are, but the English alphabet isn't long enough for that.

There were 15 robberies a decade ago, there were 41 robberies this year. That's not easy to do with crime being "down" so much.

*-CPD drew new beat boundaries in 2012. You can read more about how CWB mitigates the effects of the re-drawing by clicking "read more" below.



Our source for crime data is the city itself, with robbery data taken from the City of Chicago Data Portal. In the event of an outage or update failure at the data portal, information is obtained from the Chicago Police Department web site. The city quarantines crime data for at least 7 days.

The complete list of 2013 robberies is here.
The complete list of 2012 robberies is here.
The complete list of 2008 robberies is here.
The complete list of 2003 robberies is here.

Beat ranking information is from the Chicago Police Department web site.

Our standard statement regarding historical data applies:

The city quarantines crime data for at least 7 days.

The CPD realigned our area's police beats in March 2012. The lines that divide Chicago police beats literally run down the middle of their shared streets and it is not possible to know with certainty which side of a street crimes were reported on before March 4, 2012.  In order to maintain consistency across all years, we have included all robberies that were reported on both sides of the border streets (Irving Park Road, Southport Avenue, and Belmont Avenue) in our calculations. As a result, our post-March 4, 2012, stats may vary slightly from official records.

Also, note that very recent crime totals may fluctuate slightly as incidents are investigated and recategorized. These fluctuations settle out fairly quickly.