Area Code 818

818 is the area code for the San Fernando Valley of Los Angeles, California. Some Los Angeles city districts served by 818 include Hollywood, Granada Hills, Calabasas, and Universal City. Parts of Los Angeles County, including Glendale, Pasadena, Westlake Village, and La Canada Flintridge are in this area. 818 also covers Oak Park and Thousand Oaks in Ventura County. The 818 area code is overlaid by the 747 area code, requiring 10-digit dialing.