As of December 20th, 2017, 333 shootings in the United States were recorded as mass shootings by the Gun Violence Archive, which defines a mass shooting as an incident when four persons are injured or killed.
Topping any list this year are two incidents that are far and away the most violent mass shootings -- The Las Vegas and Sutherland Springs, Texas, shootings. However, there were numerous acts of gun violence in the United States in 2017, and they occurred at an astonishing rate and frequency.
Efficientgov summarized each incident to present its severity and impact, and ranked and displayed all 37 largest mass shootings in the U.S. in 2017 on both an interactive map and timeline. In keeping with widespread public safety practices, we have omitted the name(s) of the shooters in each incident. Our methodology follows the list below our gun violence data visualizations.
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#1 Las Vegas, Nevada
- Date: Oct. 1, 2017
- Number of victims killed: 59
- Number of victims injured: 441
- Number of known shooters: 1
The Las Vegas shooting was the deadliest mass shooting in U.S. history. A gunman opened fire on approximately 22,000 Las Vegas concert attendees from the 32nd floor of the Mandalay Bay Resort and Casino.
#2 Sutherland Springs, Texas
- Date: Nov. 5, 2017
- Number of victims killed: 27
- Number of victims injured: 20
- Number of known shooters: 1
A gunman walked into First Baptist Church in Sutherland Springs and opened fire. One of the victims in this incident was the pastor’s 14-year-old daughter, Annabelle.
#3 Little Rock, Arkansas
- Date: July 1, 2017
- Number of victims killed: 0
- Number of victims injured: 25
- Number of known shooters: 1
During a show featuring rapper Finese2Tymes, at the Power Ultra Lounge, a gunman opened fire. At least 25 were injured in the early morning shooting.
#4 Corning, California
- Date: Nov. 14, 2017
- Number of victims killed: 6
- Number of victims injured: 12
- Number of known shooters: 1
An individual first killed his neighbors, Danny Elliot and Diana Steele, before entering a northern California elementary school and opening fire again.
#5 Cincinnati, Ohio
- Date: March 26, 2017
- Number of victims killed: 2
- Number of victims injured: 15
- Number of known shooters: 3
Three known shooters entered the Cameo nightclub and opened fire. The incident was the worst mass shooting in Cincinnati’s history.
#6 Plano, Texas
- Date: Sept. 10, 2017
- Number of victims killed: 9
- Number of victims injured: 1
- Number of known shooters: 1
The estranged husband of a Plano resident stormed into a football party his wife was hosting. The gunman then opened fire killing Meredith Hight and eight other victims.
#7 Fort Lauderdale, Florida
- Date: Jan. 6, 2017
- Number of victims killed: 5
- Number of victims injured: 6
- Number of known shooters: 1
A gunman loaded his weapon in a bathroom stall at the Fort Lauderdale-Hollywood International Airport and then opened fire in the baggage claim.
#8 Bogue Chitto, Mississippi
- Date: May 27, 2017
- Number of victims killed: 8
- Number of victims injured: 1
- Number of known shooters: 1
A domestic argument caused a gunman to erupt and open fire in multiple locations. The list of deceased includes a Lincoln County Sheriff’s Deputy, William Durr, and two juveniles.
#9 Phenix City, Alabama
- Date: May 28, 2017
- Number of victims killed: 0
- Number of victims injured: 12
- Number of known shooters: N/A
No arrests were made after gunfire injured 12 people during a house party in Phenix City, Alabama.
#10 Chicago, Illinois
- Date: May 7, 2017
- Number of victims killed: 2
- Number of victims injured: 8
- Number of known shooters: N/A
Two gunman opened fire at a memorial service killing siblings Michael and Adriana Williams. At least eight others were injured in the act of violence. Police believe the shooting was gang-related.
#11 Brownsville, Tennessee
- Date: Jan. 27, 2017
- Number of victims killed: 0
- Number of victims injured: 10
- Number of known shooters: 1
After a fight broke out during an unsanctioned high school party, located at the National Guard Armory, a gunman opened fire injuring 10 young adults.
#12 Philadelphia, Pennsylvania
- Date: May 20, 2017
- Number of victims killed: 0
- Number of victims injured: 10
- Number of known shooters: N/A
At least 27 shots were fired during this north Philadelphia attack. Victims were outside on the 2300 block of West Huntingdon Street when the shooting occurred. No arrests were made.
#13 Lanett, Alabama
- Date: Oct. 22, 2017
- Number of victims killed: 2
- Number of victims injured: 7
- Number of known shooters: 2
This shooting took place at Club Addiction in Lanett. Limited details are available about the incident.
#14 Antioch, Tennessee
- Date: Sept. 24, 2017
- Number of victims killed: 1
- Number of victims injured: 8
- Number of known shooters: 1
Following a church service at Burnette Chapel Church a masked gunman opened fire on the congregation. The woman killed, Melanie Crow Smith, was a mother of two.
#15 Cincinnati, Ohio
- Date: July 8, 2017
- Number of victims killed: 1
- Number of victims injured: 8
- Number of known shooters: N/A
Police are offering a $10,000 reward for details on this particular shooting that occurred at a gender reveal party. Residents of the home were inside watching a movie when one or two people entered the home and opened fire.
#16 Bronx, New York
- Date: June 30, 2017
- Number of victims killed: 2
- Number of victims injured: 6
- Number of known shooters: 1
A gunman entered Bronx-Lebanon Hospital Center and began shooting at former co-workers on the 16th and 17th floor.
#17 San Diego, California
- Date: April 30, 2017
- Number of victims killed: 2
- Number of victims injured: 6
- Number of known shooters: 1
During a poolside birthday party at an upscale apartment complex in La Jolla, a gunman – and complex resident – opened fire on partygoers.
#18 Chicago, Illinois
- Date: June 11, 2017
- Number of victims killed: 0
- Number of victims injured: 9
- Number of known shooters: N/A
A drive by shooting on West Douglas Boulevard left nine injured. The shooter, inside a black vehicle, was not identified. Police believe the shooting was gang-related.
#19 Columbus, Ohio
- Date: April 16, 2017
- Number of victims killed: 0
- Number of victims injured: 9
- Number of known shooters: 2
During the early hours of Easter Sunday, a shooting occurred at J&R Party Hall. The dozens of shots fired left nine injured.
#20 Orlando, Florida
- Date: June 5, 2017
- Number of victims killed: 6
- Number of victims injured: 0
- Number of known shooters: 1
A gunman shot and killed five of his coworkers, then himself, at manufacturing company Fiamma Inc. in Orlando, Florida.
#21 Washington, D.C.
- Date: May 27, 2017
- Number of victims killed: 1
- Number of victims injured: 7
- Number of known shooters: N/A
Algernon Jones, father of one, was shot and killed around 1 a.m. in the 100 block of Q Street in northwest Washington. Police have limited information, or leads, regarding this mass shooting that left seven others injured.
#22 Columbia, South Carolina
- Date: Sept. 16, 2017
- Number of victims killed: 0
- Number of victims injured: 8
- Number of known shooters: 4
Four men were charged in connection with a shooting that injured eight people in Columbia’s popular nightlife district.
#23 Miami, Florida
- Date: Jan. 16, 2017
- Number of victims killed: 0
- Number of victims injured: 8
- Number of known shooters: 2
While families celebrated Martin Luther King Jr. Day in Brownsville Park, a gunman appeared, and shot eight people. All eight victims survived, five of them were teens or children.
#24 Chicago, Illinois
- Date: Aug. 20, 2017
- Number of victims killed: 2
- Number of victims injured: 5
- Number of known shooters: 1
While a group of people were gathered in a parking lot of a banquet hall in West Pullman, a drive by shooting occurred. After a brief vehicle pursuit, the shooter evaded officers.
#25 Fort Worth, Texas
- Date: June 9, 2017
- Number of victims killed: 2
- Number of victims injured: 5
- Number of known shooters: N/A
Fort Worth’s gang units deployed to investigate this incident. No further information on the case was provided.
#26 San Francisco, California
- Date: June 14, 2017
- Number of victims killed: 4
- Number of victims injured: 2
- Number of known shooters: 1
A former UPS driver injured and killed his colleagues before shooting himself, at the company’s warehouse in San Francisco.
#27 Atlanta, Georgia
- Date: June 22, 2017
- Number of victims killed: 1
- Number of victims injured: 6
- Number of known shooters: N/A
Seven were shot inside a home in southwest Atlanta. There are few details on what prompted the event, and police do not have any suspects.
#28 Brookhaven, Mississippi
- Date: Nov. 24, 2017
- Number of victims killed: 1
- Number of victims injured: 6
- Number of known shooters: 2
One of the two shooters at the Brookhaven nightclub, Oasis, turned himself in after killing one and injuring six. The incident escaladed after an argument that started inside the club.
#29 Caruthersville, Missouri
- Date: Feb. 12, 2017
- Number of victims killed: 1
- Number of victims injured: 6
- Number of known shooters: 2
This mass shooting occurred inside Club Envy around 3:30am. At the time of the incident there were nearly 300 clubbers in attendance.
#30 Chicago, Illinois
- Date: Aug. 8, 2017
- Number of victims killed: 1
- Number of victims injured: 6
- Number of known shooters: N/A
Just a few blocks away from the Chicago Police Department Headquarters, 15 shots were fired into a family barbeque. No one was arrested in connection to the incident though police suspect it could be gang-related.
#31 High Point, North Carolina
- Date: July 26, 2017
- Number of victims killed: 1
- Number of victims injured: 6
- Number of known shooters: N/A
In a potential act of gang violence, someone in an SUV opened fire on a group of people after a memorial service.
#32 Jonesboro, Arkansas
- Date: May 14, 2017
- Number of victims killed: 1
- Number of victims injured: 6
- Number of known shooters: 2
During an event at The Basement in downtown Jonesboro, video footage captured two shooters firing six shots into the event.
#33 Saint Louis, Missouri
- Date: March 24, 2017
- Number of victims killed: 1
- Number of victims injured: 6
- Number of known shooters: 1
A group of people, ranging in ages from 17-40, were standing outside a home in north St. Louis when three suspects approached. One of the suspects opened fire. All three suspects then fled the scene. No arrests were made.
#34 Edgewood, Maryland
- Date: Oct. 18, 2017
- Number of victims killed: 3
- Number of victims injured: 3
- Number of known shooters: 1
The mass shooting began in a business park when a gunman began firing at his co-workers. After leaving the initial scene the gunman continued to Wilmington, Delaware where we shot another victim.
#35 Houston, Texas
- Date: April 7, 2017
- Number of victims killed: 5
- Number of victims injured: 0
- Number of known shooters: N/A
A Houston woman went on a shooting spree, targeting several family members, which spanned multiple scenes and counties.
#36 La Madera, New Mexico
- Date: June 15, 2017
- Number of victims killed: 5
- Number of victims injured: 0
- Number of known shooters: 1
After stealing a vehicle, a New Mexico man randomly shot and killed five people in a three-hour period.
#37 Rothschild, Wisconsin
- Date: March 22, 2017
- Number of victims killed: 5
- Number of victims injured: 0
- Number of known shooters: 1
A gunman entered his estranged wife’s place of work, the Marathon Savings Bank, and opened fire on employees. He also killed his wife’s divorce attorney. Police eventually located, and killed, the shooter at his place of residence.
Methodology for 37 Largest Mass Shootings of 2017
The Gun Violence Archive collects daily information from more than 2,500 media, law enforcement, government and commercial sources to provide a comprehensive look at gun violence in America.
We used the information found at the Gun Violence Archive to determine the largest mass shootings in the U.S. for 2017, but we applied both the number of people killed as well as injured to complete a picture of each scenario and capture the most severe mass shootings. We weighed the number of deaths 20 percent heavier than mass shooting injuries, then added both figures together to rank each incident.
