Number of mass shootings

California is the top region by number of mass shootings in the United States of America. As of 2023, number of mass shootings in California was 5,962 cases that accounts for 17.33% of the United States of America's number of mass shootings. The top 5 regions (others are Texas, Ohio, Florida, and Alabama) account for 49.19% of it. The United States of America's total number of mass shootings was estimated at 34,394 cases in 2023.