Note: A mass shooting involves four or more people injured or killed in a single event at the same time and location.

A gunman opens fire inside a church in Sutherland Springs, Tex. At least 26 were killed. Since Orlando, at least 639 people have been killed and 2,635 have been injured in mass shootings.

A gunman opens fire on a country music festival in Las Vegas. At least 59 were killed and 527 were injured.

A gunman opens fire in an Orlando nightclub, leaving 49 dead and many wounded. It was the deadliest mass shooting in modern U.S. history – until Oct. 1, 2017.

Each colored square represents a day in which at least one mass shooting took place.

Each colored square represents a day in which at least one mass shooting took place in the United States.

2016

JUNE 12, 2016

A gunman opens fire in an Orlando nightclub, leaving 49 dead and many wounded. It was the deadliest mass shooting in modern U.S. history – until Oct. 1, 2017.

June

August

July

42 mass shootings

31 mass shootings

49 mass shootings

October

September

November

December

32 mass shootings

31 mass shootings

36 mass shootings

27 mass shootings

2017

February

January

March

April

31 mass shootings

25 mass shootings

22 mass shootings

39 mass shootings

June

May

July

August

23 mass shootings

35 mass shootings

36 mass shootings

33 mass shootings

September

October

NOVEMBER

28 mass shootings

8 mass shootings

27 mass shootings

NOV. 5, 2017

Oct. 1, 2017

A gunman opens fire inside a church in Sutherland Springs, Tex. At least 26 were killed. Since Orlando, at least 639 people have been killed and 2,635 have been injured in mass shootings.

A gunman opens fire on a country music festival in Las Vegas. At least 59 were killed and 527 were injured.