which u.s. state has the most roller coasters
California â Um,â¦ Thereâs a lot of coasters.. Ironically, California is home to the most roller coasters, but is seldom looked at as a roller coaster heaven. SoCal does boast Knottâs Berry Farm, Six Flags Magic Mountain, Universal Studios, Disneyland, and Californiaâs Adventure. Thereâs also a few beach parks in Santa Monica and San Diego.