Monterey Park shooter, age 72, is the oldest in the mass shooter database

[mnhtnbb]

13. There's a current database maintained by Mother Jones

tracking "mass shootings" from 1982 through 2023

https://www.motherjones.com/politics/2012/12/mass-shootings-mother-jones-full-data/

There is no agreed upon definition of what constitutes a mass shooting, but according to RAND's Gun Policy Initiative in America

"Data show that, regardless of how one defines mass shootings, perpetrators are likely to be men."

https://www.rand.org/research/gun-policy/analysis/essays/mass-shootings.html