List of mass shootings in the United States in 2020

This is a list of shootings in the United States that have occurred in 2020. Shootings are incidents involving multiple victims of firearm-related violence. The precise inclusion criteria are disputed, and there is no broadly accepted definition.

Gun Violence Archive, a nonprofit research group that tracks shootings and their characteristics in the United States, defines a mass shooting as an incident in which four or more people, excluding the perpetrator(s), are shot in one location at roughly the same time. The Congressional Research Service narrows that definition, limiting it to "public mass shootings", defined by four or more victims killed, excluding any victims who survive. The Washington Post and Mother Jones use similar definitions, with the latter acknowledging that their definition "is a conservative measure of the problem", as many shootings with fewer fatalities occur. The crowdsourced Mass Shooting Tracker project has the most expansive definition of four or more shot in any incident, including the perpetrator in the victim inclusion criteria.

There were 614 mass shootings in 2020 that fit the inclusion criteria of this article, resulting in 446 deaths and 2,515 injuries, for a total of 2,961 victims. Compared to the previous year, there were 180 more incidents. However, according to Statista the number is only 2 for 2020 compared to 10 mass shootings in 2019.

Definitions

Stanford University MSA Data Project: three or more persons shot in one incident, excluding the perpetrator(s), at one location, at roughly the same time. Excluded are shootings associated with organized crime, gangs or drug wars.
Mass Shooting Tracker: four or more persons shot in one incident, at one location, at roughly the same time.
Gun Violence Archive/Vox: four or more shot in one incident, excluding the perpetrators, at one location, at roughly the same time.
Mother Jones: three or more shot and killed in one incident at a public place, excluding the perpetrators.
The Washington Post: four or more shot and killed in one incident at a public place, excluding the perpetrators.
ABC News/FBI: four or more shot and killed in one incident, excluding the perpetrators, at one location, at roughly the same time.
Congressional Research Service: four or more shot and killed in one incident, excluding the perpetrators, at a public place, excluding gang-related killings and those done with a profit-motive.

Only incidents considered mass shootings by at least two of the above sources are listed below.

List

A number n in brackets indicates that it was the nth mass shooting in that community in the year.

Monthly statistics

The statistics columns for each month are updated after the month ends, in an effort to make sure the correct number of events, individuals affected, and descriptions are accurate. Thus, the number may be incomplete throughout the month until the last day of each month.