 Walnut and Diamond Bar), Buena Park, Cerritos, West Covina, Irvine, communities in the South Bay, Los Angeles and southern Orange County.Many minority groups from China also live in California, for example, there are Tibetan and Mongolian Americans concentrated in San Francisco, Oakland, San Jose, Orange County, and the Los Angeles/Long Beach area.Large Korean American communities exist in the Koreatown area of Los Angeles, the eastern San Gabriel Valley, the San Fernando Valley, Cerritos/Long Beach, South Bay, Los Angeles, northern Orange County and San Diego area.