Below is a list of all mass shootings in the United States which occurred after the Columbine High School Massacre. Dates and death tolls (excluding the shooter) are included. Although many other mass shootings have occurred, for the sake of time and physical space, only shootings involving the death of five or more people have been included in this article. School shootings have been listed  in bold. 

1.Columbine High School Shooting, Littleton, Colorado – April 1999: 13 Dead

2.Atlanta Shootings, Atlanta, Georgia – July 1999: 12 Dead

3.Wedgwood Baptist Church shooting, Fort Worth, Texas – September 1999: 7 Dead

4.Xerox Killings, Honolulu, Hawaii – November 1999: 7 Dead

5.Tampa Hotel Shootings, Tampa, Florida – December 1999: 5 Dead

6.Wakefield Massacre, Wakefield, Massachusetts – December 2000: 7 Dead

7.Lockheed Martin Shooting, Median, Mississippi – July 2003: 6 Dead

8.Living Church of God Shooting, Brookfield, Wisconsin – March 2005: 7 Dead

9.Red Lake High School, Red Lake Indian Reservation, Minnesota – March 2005: 9 Dead

10.Goleta Postal Shootings, Goleta, California – January 2006: 7 Dead

11.Capitol Hill Massacre, Seattle Washington – March 2006: 6 Dead

12.West Nickel Mines Amish School, Nickel Mines, Pennsylvania – October 2006: 5 Dead

13.Tolley Square Shooting, Salt Lake City, Utah – February 2007: 5 Dead

14.Virginia Tech University, Blacksburg, Virginia – April 2007: 32 Dead

15.Crandon Shooting, Crandon Wisconsin – October 2007: 6 Dead

16.Westroads Mall Shooting, Omaha Nebraska – December 2007: 8 Dead

17.Kirkwood City Council Shooting, Kirkwood, Missouri – February 2008: 6 Dead

18.Northern Illinois University, Dekalb, Illinois – February 2008: 5 Dead

19.Atlantis Plastics Shooting, Henderson Kentucky – June 2008: 5 Dead

20.Carthage Nursing Home Shooting – Carthage, North Carolina – March 2009: 8 Dead

21.Geneva County Massacre, Geneva and Samson, Alabama – March 2009: 10 Dead

22.Binghampton Shootings, Binghampton – April 2009: 13 Dead

23.Fort Hood Shooting, Fort Hood, Texas – November 2009: 13 Dead

24.Hartford Beer Distributor Shooting, Manchester, Connecticut – August 2010: 8 Dead

25.Tucson Shooting, Tucson, Arizona – January 2011: 6 Dead

26.Seal Beach Shooting, Seal Beach, California – October 2011: 8 Dead

27.Oikos University, Oakland, California – April 2012: 7 Dead

28.Seattle Café Shooting, Seattle, Washington – May 2012: 5 Dead

29.Aurora Shooting, Aurora, Colorado – July 2012: 12 Dead

30.Sikh Temple Shooting, Oak Creek, Wisconsin – August 2012: 6 Dead

31.Accent Signage Systems Shooting, Minneapolis, Minnesota – September 2012: 6 Dead

32.Sandy Hook Elementary School, Newtown, Connecticut – December 2012: 27 Dead

33.Santa Monica College, Santa Monica, California – June 2013: 5 Dead

34.Hialeah Shooting, Hialeah, Florida – July 2013: 6 Dead

35.Washington Navy Yard Shooting, Washington D.C. – September 2013: 12 Dead

36.University of California Santa Barbara, Isla Vista, California – May 2014: 6 Dead

37.Marysville Pilchuck High School, Marysville, Washington – October 2014: 4 Dead

38.Charleston Church Shooting, Charleston, South Carolina – June 2015: 9 Dead

39.Chattanooga Military Recruitment Center, Chattanooga Tennessee – July 2015: 5 Dead

40.Umpqua Community College, Roseburg, Oregon – October 2015: 9 Dead

41.San Bernardino Attack, San Bernardino, California – December 2015: 14 Dead

42.Kalamazoo Shooting Spree, Kalamazoo County, Michigan – February 2016: 6 Dead

43.Orlando Night-club Shooting, Orlando, Florida – June 2016: 49 Dead

44.Dallas Police Shooting, Dallas Texas – July 2016: 5 Dead

45.Cascade Mall Shooting, Burlington, Washington – September 2016: 5 Dead

46.Fort Lauderdale Airport Shooting, Fort Lauderdale, Florida- January 2017: 5 Dead

47.Las Vegas Shooting, Las Vegas, Nevada – October 2017: 58 Dead

48.Sutherland Springs Church, Sutherland Springs, Texas – November 2017: 26 Dead

49.Rancho Tehama Shooting, Rancho Tehama, California – November 2017: 5 Dead

50.Marjory Stoneman Douglas High School, Parkland, Florida – February 2018: 17 Dead

According to The Washington Post, since 1966, 1077 individuals have been fatally shot and wounded as a result of mass shootings in which more than four people perished; Children and teenagers compose about a tenth of these fatalities. Almost 300 guns have been obtained by authorities in these shootings, and over half of them were obtained legally. The AR-15 rifle has been increasingly used in such shootings, with the latest being in this month’s most recent high school shooting in Florida. It is estimated that more than 8 million of these weapons are owned in American households. The trend in mass shootings has been rising notably since 2006-07.