The nonprofit Gun Violence Archive has counted at least 232 such shootings, defined as a shooting in which four or more people were killed or injured, through the end of May. Of those shootings, 11 resulted in four or more deaths.
The group recorded 693 mass shootings last year, including 28 that killed four or more.
Here is a partial list of mass shootings this year.
June 1: Tulsa, Okla.
Several people were shot and five were killed at a medical building next to Saint Francis Hospital in Tulsa, Okla., Tulsa Police said. Police said the shooter was suspected of having committed suicide.
May 24: Uvalde, Texas
A gunman killed 19 children and two teachers at Robb Elementary School in Uvalde, Texas, about 80 miles west of San Antonio.
Law enforcement fatally shot the shooter, identified as 18-year-old Salvador Ramos, but not before more than an hour after he entered the school, raising questions about whether lives could have been saved if he they had acted earlier.
The US Department of Justice said it would review law enforcement’s response.
May 15: Laguna Woods, California.
A gunman killed one person and seriously injured four other members of the Irvine Taiwan Presbyterian Church in Laguna Woods, California.
The suspect, David Chou, 68, is a Las Vegas man with a wife and child in Taiwan who had traveled to Orange County with a grievance against Taiwanese, authorities said. He was charged with murder and five counts of attempted murder in what Orange County Sheriff Don Barnes called a “politically motivated hate incident.”
May 14: Buffalo
A man armed with an assault weapon killed 10 people and injured three others at a Tops supermarket in a predominantly black neighborhood of Buffalo, authorities said.
The suspect, 18-year-old Payton S. Gendron, is white, and the 10 people who died were all black. Before the attack, Mr. Gendron had posted a racist screed of nearly 200 pages online. He pleaded not guilty. He faces life in prison if convicted.
May 13: Milwaukee
At least 16 people were shot and injured in a shooting in downtown Milwaukee, in a popular nightlife district a few blocks from the arena where an NBA playoff game ended a few hours earlier, authorities said.
April 27: Biloxi, miss.
The owner and two employees of the Broadway Inn Express motel in Biloxi, Mississippi, were shot and killed, and another person was also shot in a carjacking. The suspect, Jeremy Alesunder Reynolds, 32, was later found dead, CBS News reported.
April 12: Brooklyn
A gunman opened fire inside a crowded subway car during the morning rush hour, injuring 10 people, the worst attack on New York’s subway system in decades. More than a dozen other people were also injured, some choking on smoke from the two aircraft. According to the police, the shooter exploded before he started shooting. No one was killed.
A suspect, Frank R. James, was arrested the next day and charged with carrying out a terrorist attack on a public transportation system. If convicted, he faces life in prison.
April 3: Sacramento
As revelers exited nightclubs in a two-block neighborhood in downtown Sacramento, a barrage of gunfire killed six people and injured 12, authorities said. Days later, the Sacramento Police Department said “gang violence” was at the center of the shooting, which involved at least five gunmen.
March 19: Dumas, Ark.
Two people engaged in a shootout and sprayed a crowd of gunfire, killing a bystander and injuring 27 others, including six children, at a community event and car show in the small farming community of L ‘Arkansas.
January 23: Milwaukee
Law enforcement officers were called to a Milwaukee home for a welfare check and found six people who had been shot and killed. The victims – five men and one woman – had been shot, police said, and evidence early in the investigation suggested the killings had been targeted.