Source ...
https://horseracingwrongs.org/killed-2019/
A few surprises for me, such as New York (76) and Florida (62) are not far off California's high of 82. Plus Kentucky is surprisingly low (13).
Saratoga (16) seems high for short meet when compared to Del Mar (6).
Some tracks have zero fatalities (Prairie Meadows, Indiana Grand, Kentucky Downs, Evangeline Downs, Zia Park, Presque Isle Downs).
Santa Anita Park: 37 dead racehorses
Gulfstream Park: 34 dead racehorses
Belmont Park: 30 dead racehorses
Charles Town Races: 20 dead racehorses
Turf Paradise: 19 dead racehorses
Golden Gate Fields: 17 dead racehorses
Tampa Bay Downs: 16 dead racehorses
Saratoga Race Course: 16 dead racehorses
Los Alamitos Race Course: 14 dead racehorses
Thistledown: 14 dead racehorses
Sunland Park: 14 dead racehorses
Finger Lakes Racetrack: 13 dead racehorses
Parx Racing: 13 dead racehorses
Penn National: 12 dead racehorses
Remington Park: 12 dead racehorses
Mountaineer Racetrack: 12 dead racehorses
Oaklawn Park: 11 dead racehorses
Mahoning Valley: 11 dead racehorses
Laurel Park: 10 dead racehorses
Arlington Park: 9 dead racehorses
Delaware Park: 9 dead racehorses
Delta Downs: 9 dead racehorses
Hawthorne Race Course: 8 dead racehorses
Sam Houston Park: 7 dead racehorses
Belterra Park: 7 dead racehorses
Keeneland: 6 dead racehorses
Del Mar: 6 dead racehorses
Lone Star Park: 5 dead racehorses
Will Rogers Downs: 5 dead racehorses
Fair Grounds Race Course: 5 dead racehorses
Louisiana Downs: 5 dead racehorses
Aqueduct Racetrack: 4 dead racehorses
Pimlico Race Course: 4 dead racehorse
Monmouth Park: 3 dead racehorses
Gulfstream Park West: 3 dead racehorses
Churchill Downs: 3 dead racehorses
Arizona Downs: 3 dead racehorse
Turfway Park: 2 dead racehorses
Retama Park: 2 dead racehorses
Rillito Park: 1 dead racehorse
Fairmount Park: 1 dead racehorse
Ellis Park: 1 dead racehorse
Sunray Park: 1 dead racehorse
Emerald Downs: 1 dead racehorse