Topanga is a
census-designated place in western
Los Angeles County, California, US. It is located in the
Santa Monica Mountains. Occupying Topanga Canyon, it is often referred to by that name. Topanga is bounded on three sides by State Park or conservancy lands, and on the south by the Pacific Ocean and a small strip of
Malibu, which is the main community to the west. On the east is
Pacific Palisades. Topanga had a population of 8,289 as of 2010. The
ZIP code is 90290 and the
area code is primarily
310, with
818 only at the north end of the canyon. It is in the 3rd County Supervisorial district.