FBI defines active shooter as individuals actively killing or attempting to kill in populated area
The FBI defines Active Shooter as, “one or more individuals actively engaged in killing or attempting to kill people in a populated area.”
NCIER®
2025 Snapshot and Comparison with 2024
Report pages 10–13: 14 claims on pp. 10–13 (fact 12, statement 1, definition 1).
Claims in this section
2025 had 34 active shooter incidents in 21 states and D.C. with 166 casualties
In 2025, there were 34 active shooter incidents across 21 states and D.C., resulting in 166 casualties.
2025 snapshot: 34 incidents, 166 casualties, 34 shooters, 7 mass killings
34 | 166 | 34 | 07 INCIDENTS | CASUALTIES | SHOOTERS | MASS KILLINGS
All 2025 shooters were male and 41% of incidents occurred in commerce
100% | Male Shooter | 41% | Occurred in Commerce | 21 States and D.C.
2025 wounded totaled 115: 109 civilians, 5 officers, 1 security; 14 commerce, 7 open space
WHERE INCIDENTS OCCURRED | TOTAL WOUNDED | 115 Commerce | 14 | Civilian | 109 Law Enforcement | 5 Open Space | 7 | Security | 1
2025 killed totaled 51: 47 civilians, 3 officers, 1 security; government 6, education 4, worship 3
Government | 6 | TOTAL KILLED | 51 Civilian | 47 Education | 4 | Law Enforcement | 3 Security House of Worship 3 | 1
2025 outcomes: 16 apprehended, 10 suicide, 7 killed, 1 at large; 26 handguns, 16 rifles, 7 shotguns
SHOOTER RESOLUTIONS | FIREARMS Apprehended | 16 | Handgun | 26 10 7 16 Suicide Killed Rifle At Large | 1 | Shotgun | 7
Line chart compares incident metrics for 2024 (gray) and 2025 (gold)
The line chart presents a comparison of several incident-related metrics across 2024 and 2025. The gold line depicts the 2025 data, and the gray line depicts the 2024 data.
Chart data show increases in almost all categories in 2025
The data referenced in this chart shows an increase across almost all categories in 2025:
Incidents rose from 24 to 34 and casualties from 106 to 166 in 2025
The total incidents rose from 24 to 34, and casualties rose from 106 to 166.
Officers killed rose from one to three; officers wounded stayed at five
Law enforcement officers killed increased from one to three, although the number of officers wounded remained at five.
Mass killing events more than doubled from three in 2024 to seven in 2025
Mass Killing events more than doubled, rising from three to seven.
One 2024 incident had two shooters; no 2025 incident had multiple shooters
In 2024, one incident had two shooters, while in 2025 no incident had multiple shooters.
One 2025 shooter wore body armor versus none in 2024
No attackers in 2024 wore body armor; however one shooter in 2025 wore body armor.
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