2017 deemed deadliest year for mass shootings in modern US history

As a new year inches closer, Americans reflect on the devastating events that made 2017 the deadliest year of mass shootings in modern U.S. history.

According to Gun Violence Archive, a nonprofit organization that continuously tracks gun-related death and injury reports based on official records, there have been 345 mass shootings in America in 2017 alone.

And even more daunting -- two of the five deadliest mass shootings in U.S. history occurred in the span of just 35 days.

Las Vegas massacre: October 1, 2017

On October 1, 2017, 64-year-old Stephen Paddock opened fire on 22,000 people at a country music festival from his hotel suite on the 32nd floor of the Mandalay Bay hotel on the Las Vegas strip. The attack, which left 58 people dead and more than 500 injured, marked the deadliest mass shooting in modern U.S. history. The death toll surpassed the Orlando Pulse nightclub massacre, which took the lives of 49 people in June of 2016.

RELATED: The most devastating images from the Las Vegas shooting

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The most devastating images from the Las Vegas concert shooting
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The most devastating images from the Las Vegas concert shooting
LAS VEGAS, NV - OCTOBER 01: A man lays on top of a woman as others flee the Route 91 Harvest country music festival grounds after a active shooter was reported on October 1, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, leaving at least 2 people dead. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by David Becker/Getty Images)
LAS VEGAS, NV - OCTOBER 01: People run from the Route 91 Harvest country music festival after apparent gun fire was hear on October 1, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, leaving at least 20 people dead and more than 100 injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by David Becker/Getty Images)
LAS VEGAS, NV - OCTOBER 02: A cowboy hat lays in the street after shots were fired near a country music festival on October 1, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, leaving at least 20 people dead and more than 100 injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by David Becker/Getty Images)
LAS VEGAS, NV - OCTOBER 01: People run for cover at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)
LAS VEGAS, NV - OCTOBER 01:  A person lies on the ground covered with blood at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)
LAS VEGAS, NV - OCTOBER 01:  A person lies on the ground at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)
LAS VEGAS, NV - OCTOBER 01: (People carry a peson at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)
LAS VEGAS, NV - OCTOBER 01: People take cover at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)
LAS VEGAS, NV - OCTOBER 01: A man in a wheelchair is taken away from the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)
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Texas church shooting: November 5, 2017

Just one month after the tragic attack in Las Vegas, 26-year-old Devin Patrick Kelley killed at least 26 churchgoers and injured 20 others at First Baptist Church in Sutherland Springs, Texas. It was the deadliest mass shooting in the state's history.

Fort Lauderdale-Hollywood International Airport: January 6, 2017

Five people were killed and eight others were injured when 26-year-old Esteban Santiago opened fire at Fort Lauderdale-Hollywood International Airport in Florida. He flew from Alaska to Florida with a gun in a checked bag, which he used to carry out the massacre in the baggage claim area of Terminal 2.

RELATED: The deadliest mass shootings in the US since 1900

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The deadliest mass shootings in the US since 1900
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The deadliest mass shootings in the US since 1900

On October 1, 2017 in Las Vegas, Nevada, gunman Stephen Paddock opened fire on concertgoers below from the windows of his suite at the Mandalay Bay Resort and Casino. 

As of October 3, at least 59 people are dead and over 500 injured in what became the deadliest mass shooting in United States history. 

(Photo by David Becker/Getty Images)

Five Dallas police officers were shot and killed by Micah Xavier Johnson, 25, as they guarded a group of protesters on July 7, 2016.

(Photo via REUTERS/Carlo Allegri)

On June 12, 2016, Omar Mateen opened fire inside Pulse Nightclub, a well-known LGBT club in Orlando, Florida, killing 49 people and injuring 58. 

REUTERS/Carlo Allegri/File Photo

Chris Harper-Mercer, 26, opened fire on the Umpqua Community College campus in Roseburg, Oregon, killing nine people and wounding nine others before he was shot dead by police on October 1, 2015.

(Photo by Scott Olson/Getty Images)

White supremacist Dylann Roof, 21, opened fire at Emanuel African Methodist Episcopal Church in Charleston, South Carolina, during a bible study, leaving nine churchgoers dead on June 18, 2015. 

(REUTERS/Brian Snyder)

Rival motorcycle gangs killed nine at a restaurant in Waco, Texas, on May 18, 2015. More than 190 people are arrested. 

(REUTERS/Waco Police Department/Handout)

Fourteen people were killed and 22 were wounded when married couple Syed Rizwan Farook and Tashfeen Malik attacked a service center for people with developmental disabilities during its holiday party in San Bernadino, California, on Dec. 2, 2015.

(Photo by Barbara Davidson/The Los Angeles Times via Getty Images)

A college student killed six people, three in his apartment and others on the streets of Isla Vista, California, on May 23, 2014. The mentally ill gunman committed suicide.

(Photo by Irfan Khan/Los Angeles Times via Getty Images)

A former Navy reservist working as a government contractor killed 12 people at the Washington Navy Yard on Sept. 16, 2013. He was shot dead by police.

(Photo by Mark Wilson/Getty Images)

On December 14, 2012, Adam Lanza attacked Sandy Hook Elementary School in Newtown, Connecticut, killing 20 children and six school staff members.

(Photo by James Keivom/NY Daily News via Getty Images)

A masked gunman killed 12 people and wounded 70 when he opened fire on July 20, 2012, at a midnight premiere of the Batman film "The Dark Knight Rises" in Aurora, Denver.

(REUTERS/Evan Semon)

A white supremacist opened fire in the Sikh Temple of Wisconsin in Oak Creek, Wisconsin, on August 6, 2012, killing six people. 

(REUTERS/John Gress)

Then-U.S. Rep. Gabrielle Giffords (D-AZ) was the target of an assassination attempt by a gunman in Tucson, Arizona, on Jan. 8, 2011. More than a dozen other people were injured and six people were killed at a public event entitled 'Congress on Your Corner' when a gunman opened fire.

(Photo by James Palka/Getty Images)

U.S. Army Major Nidal Malik Hasan, an army psychiatrist, killed 13 people and wounded 30 in a shooting at Fort Hood military base on November 5, 2009.

(Photo by Joe Raedle/Getty Images)

On April 3, 2009, 41-year-old Jiverly Antares Wong killed 13 people inside an immigration center in Binghamton, New York.

(Photo by Spencer Platt/Getty Images)

On April 16, 2007, gunman Seung-Hui Cho killed 32 people on the campus of Virginia Tech in Blacksburg, Virginia. 

(Photo by Ted Richardson/Raleigh News & Observer/MCT via Getty Images)

A gunman killed five girls in a one-room Amish schoolhouse October 2, 2006, in Nickel Mines, Pennsylvania. The man entered the school, let the boys go free, tied up the girls and shot them execution-style before killing himself.

(Photo by William Thomas Cain/Getty Images)

Two men, John Allen Muhammad, 41, and Lee Boyd Malvo, 17, ambushed 13 people, killing 10 of them, in sniper-style shootings that terrorized the Washington D.C. area for three weeks in October 2002. Muhammad was executed and Malvo was sentenced to life in prison. 

(Photo credit should read LUKE FRAZZA/AFP/Getty Images)

The Columbine High School massacre was perpetrated by students Eric Harris and Dylan Klebold who killed 12 fellow students and one teacher on April 20, 1999.

(Photo via REUTERS/Gary Caskey GCC/HB)

George Hennard killed 23 people and injured 27 others when he attacked Luby's Cafeteria in Killeen, Texas, on October 16, 1991. 

(Photo by Gaylon Wampler/The LIFE Images Collection/Getty Images)

James Huberty, pictured here, shot and killed 21 people and hurt 19 others at a McDonald's restaurant in San Ysidro, California, on July 18, 1984. 

(Photo via Getty Images)

Student Charles Whitman climbed to the top of the clock tower at the University of Texas where he shot and killed 13 people after killing his mother and wife on August 1, 1966. 

(Photo via Getty Images)

The Ludlow massacre took place when members of the Colorado National Guard as well as other militiamen shot down 19 striking coal miners in 1914. 

(Photo via the Denver Post via Getty Images)

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Lincoln Country shooting spree, Mississippi: May 28, 2017

35-year-old Willie Corey Godbolt went on a shooting spree overnight in rural Lincoln County Mississippi, killing a sheriff's deputy and seven other people in three separate locations.

Unsettling revelations

Americans are more likely to die from gun violence than many leading causes of death combined, with around 11,000 people in the U.S. killed in gun attacks each year.

The Gun Violence Archive, which defines a mass shooting as four or more people shot in one incident (not including the shooter), reports more than 14,000 people killed and over 29,000 injured in 2017.

These horrid acts of terror spanned the entire country -- occurring in cities, rural communities and suburbs in almost every state.

Here's a complete list of 2017's mass shootings in the U.S., compiled by Gun Violence Archive.

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