U.S. Mass Shootings in 2023: A Partial List

There is no official consensus on what constitutes a mass shooting, but by one count there have been more than four dozen so far this year.

Yellow police tape crosses a sidewalk and a street at the site of a mass shooting. A police vehicle sits in the middle of the street.
Near the site of a mass shooting that left 10 people dead in Monterey Park, Calif., on Jan. 21.Credit...Mark Abramson for The New York Times

In the first weeks of 2023, the United States has gotten no reprieve from its epidemic of mass shootings.

Some happen in public places, bringing terror to the spaces Americans pass through every day, while others happen behind the closed doors of a home. Some are motivated by personal grievances, while others are terrifyingly random. Some capture widespread attention, while others are barely noticed outside the local area.

There is no consensus on what constitutes a mass shooting; different groups define it differently, depending on circumstances including the number of victims, whether the victims are killed or wounded, and whether the shooting occurs in a public place. The Gun Violence Archive, a nonprofit research group that tracks gun violence using police reports, news coverage and other public sources, defines a mass shooting as one in which at least four people were killed or injured.

In 2022, the Gun Violence Archive counted 647 mass shootings. Of those shootings, 21 involved five or more fatalities. The group recorded 690 mass shootings in 2021, with 28 involving four or more fatalities.

As of early February, the Gun Violence Archive has counted 54 mass shootings in the United States this year. Six of them involved four or more fatalities.

Here is a small slice of the year’s mass shootings.

A gunman attacked people on a bus and inside a Metro station in Southeast Washington before bystanders tackled him and officers took him into custody. A transit employee who tried to intervene was killed, and three other people were injured.

Three people were killed and four others wounded in an early-morning shooting in an upscale neighborhood near Beverly Hills, Calif.The Los Angeles Police Department said the shooting took place at a short-term rental.

Seven people were fatally shot and one was transported to a hospital with life-threatening injuries after a gunman opened fire at two separate farms. A 67-year-old man who lived and worked at one of the farms, and previously worked at the other, was arrested; the authorities believe he intentionally targeted his victims.

A 72-year-old gunman killed 11 people and wounded at least nine others at a dance hall in a predominantly Asian American community as they celebrated the Lunar New Year. The police were investigating the motives of the gunman, who the police said was found dead a day later from a self-inflicted gunshot wound.

Two gunmen killed six people, including a 16-year-old mother and her 10-month-old baby, inside a home in what the authorities said was presumed to be a gang-related attack.

Eight people, all in the same family, were killed inside a home in what the police said was a murder-suicide. The victims included five children, ranging in age from 4 to 17.