A mass shooting is an event where four or more people are shot or injured in a single incident at the same general time/place (not including the shooter). In 2015 mass shootings made up less than 3% of the 13,286 gun related deaths (Source: CDC). 64 of the 330 mass shooting incidents were school shootings. The social economic cost of these incidents 2015 was $344,980,000 (Using $9.4 million as the "value of a stastical life" Source: U.S. Department of Transportation) - and that's just accounting for loss of life from these incidents. For additional information visit The Trace or The Gun Violence Archive.

Data for mass shooting incidents were obtained from the Gun Violence Archive

State JSON/Geographic Data were obtaine from the Tiger Line/US Census.

Mass shootings for the first 6 momths of 2016 have been visualized in the same format here.

If you see any errors drop me a line and I'll work to correct them!

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