Mass shootings in the U.S., by state 1982-2021

As of May 2021, California had the most mass shootings in the United States, with 22 total shootings since 1982. The source defines a mass shooting as a shooting where four or more people were killed.

Firearms in the U.S.

Mass shootings in the United States are disturbingly common. In comparison with other Western countries, there are significantly more shootings in the U.S., which some theorize is due to the relatively lax gun control laws. Gun control laws in the U.S. are dependent on the state, and the right to own a firearm is enshrined in the United States Constitution.

Mass shootings

The worst mass shooting in the U.S. was the Las Vegas Strip massacre in 2017, which resulted in 58 deaths and 546 injuries. 11 of the worst mass shootings in the United States have occurred since 2015. The vast majority of the shooters in these incidents are males, and since 2000, police have intercepted 305 active shooter incidents in the U.S.