Richard Burgi wasn't cast as Sheriff Bracke until 12 hours before they needed to begin filming his character's scenes.
A wheelchair and a sweater can be seen in Jason's tunnels during the film. The character Mark (Tom McBride) was a paraplegic who was killed by Jason in Friday the 13th, Part 2 (1981) and Mrs. Voorhees wore the sweater in the original version of Friday the 13th (1980). There's also a bicycle propped against the wall, just under the wheelchair. It's likely Ralph's bicycle, also from the original Friday the 13th ("It's got a death curse!").
Adrienne King, star of the original 1980 film, was approached by producers Andrew Form and Brad Fuller to do a cameo appearance during preproduction. A few days later, the producers called her back and told her they didn't want anyone from the original film to appear in the remake.
Including the 2009 remake, Jason has killed around 200 people throughout the "Friday the 13th" series.
Actress Willa Ford was given 10 days to learn how to wake board for her role. She said wake boarding itself wasn't as nerve racking as having to do it topless.