There are no digital effects in the film.
According to Sid Haig the actors were only given the parts of the script that featured their own scenes to prevent any leaks.
Filmed in the actual town of Salem.
Rob Zombie wrote himself a novelization of the film along with writer Brian Evenson. According to Zombie, the novelization is based on his original screenplay, which differs significantly from the final script used in the film.
Meg Foster described working with Rob Zombie as an experience like no other in her career, comparing it to "walking through a labyrinth".