John Carpenter's 1978 horror film "Halloween" was set in which fictional midwest town?

"Halloween" is an American horror franchise that consists of ten films, novels, comic books, merchandise, and a video game. The franchise predominately focuses on the fictional character of Michael Myers who was committed to a sanitarium as a child for the murder of his older sister, Judith Myers. Fifteen years later, he escapes to stalk and kill the people of Haddonfield, Illinois while being chased by his former psychiatrist Dr. Sam Loomis. Michael's killings occur on the holiday of Halloween, on which all of the films primarily take place.

The Halloween franchise, when compared to the other top-grossing American horror franchises—"A Nightmare on Elm Street", "Child's Play", "Friday the 13th", "Psycho", "Saw", "Scream", and "The Texas Chainsaw Massacre"—and adjusting for the 2011 inflation, is the fourth highest grossing horror franchise in the United States at approximately $557.5 million. This list is topped by "Friday the 13" that $687.1 million, followed by the "Nightmare on Elm Street" series with $592.8 million.

The entire movie was filmed in the state of California.