California's 30th congressional district is a congressional district in the U.S. state of California. It is San Fernando Valley in Los Angeles County, California. The cities in the district are: Bell Canyon, Canoga Park, Los Angeles, Chatsworth, Los Angeles, Encino, Los Angeles, Granada Hills, Los Angeles, Hidden Hills, Northridge, Los Angeles, Porter Ranch, Los Angeles, Reseda, Los Angeles, Santa Susana Field Laboratory, Sherman Oaks, Los Angeles, Studio City, Los Angeles, Tarzana, Los Angeles, Toluca Lake, Los Angeles, West Hills, Los Angeles, Winnetka, Los Angeles, and Woodland Hills, Los Angeles. The people who live in the district elect a representative in the United States House of Representatives. The district is currently represented by Democrat Brad Sherman.