Recently, a research team at Playcasino.com examined publicly accessible incident data, state safety filings, and injury reports to create something truly noteworthy: a ranked list of the worst mass-injury incidents ever documented at theme parks in the United States that are currently in operation. The process is simple: parks are ranked according to how many people were injured in a single recorded incident. No editorial softening or park size weighting. Sitting there, just the numbers.
The outcome is uncomfortable. The list included two Disney properties. In 2023, one theme park recorded more annual incidents than any other in the nation, and it wasn’t even close. At the top of the list is an Ohio roller coaster that broke apart on a summer night in 2006 while it was completely full of passengers, sending 27 people to the hospital.
That record is held by Mason, Ohio’s Kings Island. On July 9, 2006, a fully loaded train crossed the Son of Beast wooden roller coaster when a structural beam broke. The track abruptly dipped due to the crack; there was no warning and no time to brace. With injuries primarily to the head, neck, and chest, 19 riders needed actual medical care. The ride closed right away, reopened the following year in a modified version, and was eventually demolished in 2012. It still holds the record it set that July evening. The actual Kings Island is still open and attracts sizable crowds every season.
Disneyland comes in at number two. When Space Mountain’s purple train rear-ended the red train ahead of it on July 29, 2005, 25 visitors were hurt and 15 were sent to nearby hospitals. According to the investigation, the crash was caused by a defective brake valve that Disney’s own maintenance crew had installed a few days prior. That is not a flaw in the manufacturing process. It’s an internal breakdown. It’s worth pondering that distinction for a while. Disneyland has been open since 1955 and receives about 18 million visitors a year. The park has an excellent overall safety record. However, these incidents are real, documented, and worthy of more than a footnote.
There is neither a roller coaster nor a mechanical failure in the darkest entry on the list. Eight teenagers perished inside the Haunted Castle walkthrough at Six Flags Great Adventure in Jackson, New Jersey, on May 11, 1984. A fire started. The building lacked sprinklers, smoke detectors, and functional emergency lighting. They were unable to locate the exits. According to a post-event investigation, the park was aware of significant safety flaws in that building but chose not to fix them. Aggravated manslaughter was the charge brought against Six Flags Great Adventure. The Haunted Castle was destroyed. After Six Flags Entertainment Corporation acquired Cedar Fair in 2024, the park is still open today and is still one of the busiest on the East Coast.
Walt Disney World, on the other hand, doesn’t make the list because it doesn’t have a single catastrophic event. The volume is what makes it appear. Across its four parks, the Orlando resort reported 23 distinct incidents in 2023 that required hospitalization for at least 24 hours. Less than one-third of that was reported during the same time period by Universal Orlando, a nearby comparable operation. Disney World reported 122 illnesses and injuries to Florida state authorities between 2016 and 2020. The resort welcomes about 58 million visitors a year, and raw figures at that level might be nearly unavoidable. However, it is difficult to ignore the analogy to Universal.
Theme park safety statistics are often viewed as abstract, with large denominators giving the risks a theoretical feel. They’re not. In 2023, a 44-year-old man died after collapsing while riding the Big Thunder Mountain Railroad at Magic Kingdom. In 2024, a roller coaster car traveling at more than 65 mph struck a 38-year-old man who had avoided a restricted area at Kings Island. In 2014, a pine branch derailed the Ninja coaster at Six Flags Magic Mountain in Valencia, California, leaving 22 riders hanging 40 feet in the air for almost three hours. The tree next to the track was the source of the branch.
It’s difficult to ignore the fact that the majority of these parks are still open, well-liked, and generally trusted. It’s more difficult to determine whether that trust is entirely earned or if it’s maintained by familiarity and brand loyalty. It might be worthwhile to read the warning signs at the ride entrance before your next visit. They’re not decoration. They exist because, occasionally, the worst has already happened.
