Joe Don, I live near Haddonfield NJ, my own self. I also think of the movie whenever I drive by. Interesting...
Also, to the point about the morality play of slasher pics, yes, that concept has been discussed over and over in film classes and in books and essays on the subject. It was picked over ad infinitum all during the late 80's early 90's. It's actually quite fascinating. At first, even the film makers didn't realize they were doing it, (like it was just a psychological response) but then it became a staple and was even parodied several times, so it lost it's mystique.
I think Stephen King once commented that slasher pics were the most puritanical of films because of the zeal with which they punished "sinners". hehe...