Hermosa Beach is a beachfront city in Los Angeles County, California, United States. Its population was 19,506 at the 2010 census. The city is located in the South Bay region of the greater Los Angeles area and is one of the three Beach Cities. Hermosa Beach is bordered by the other two, Manhattan Beach to the north and Redondo Beach to the south and east. The city's beach is popular for sunbathing, beach volleyball, surfing, paddleboarding and bars.