where was halloween filmed

The original 1978 film "Halloween" was filmed primarily in Southern California, despite being set in the fictional town of Haddonfield, Illinois. Key filming locations included South Pasadena, Hollywood, Alhambra, Sierra Madre, and other areas around Los Angeles. Notably, Laurie Strode's house is located at 1115 Oxley Street in South Pasadena. Other important locations include Meridian Avenue & Mission Street in South Pasadena and the Sierra Madre Pioneer Cemetery for graveyard scenes. The film was shot over about 20 days in the spring of 1978 in these Southern California locations, which were chosen to approximate a Midwestern small-town feel despite the Southern California setting.