Halloween H20 was released on August 5th, 1998.
Filming locations include Calabasas, Chatsworth, La Puente and Los Angeles, CA.
Marion Chambers' house - 4946 Melrose Hill St. Los Angeles, Ca. 90029
Jimmy Howell's house - 4940 Melrose Hill St. Los Angeles, Ca. 90029
Rest stop - 1925 Las Virgenes Rd. Calabasas, Ca. 91302
(Malibu Creek State Park)
Thanks to Robert Patterson at http://www.set-jetter.com/ for sharing this location.
Downtown Summer Glen - Main St. La Puente, Ca. 91744
Hillcrest Academy entrance - Browns Canyon Rd. Chatsworth, Ca. 91311