Mass shootings in the U.S.: When, where they have occurred in 2018

The number of mass shootings around the country in 2018 continues to climb.

According to data from the Gun Violence Archive, a total of 57 mass shooting incidents have occurred as of April 3.

The shooting at the San Bruno YouTube offices marks the 58th mass shooting so far this year.

In 2017, the U.S. saw a total of 346 mass shootings. See statistics for other years here.

There doesn't seem to be an official definition for a "mass shooting" in the United States, but according to the Gun Violence Archive, a mass shooting is described as four or more individuals being shot or killed in the same general time and location. 

RELATED: School shootings in U.S.: When, where each shooting has occurred in 2018

The F.B.I. defines a "mass killing" as the killing of three or more people in a public place, but the federal agency also defines a "mass murderer" as someone who has killed four or more people in the same location.

The Gun Violence Archive lists itself as a not-for-profit organization that documents gun violence and gun crime nationally.

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