In Northern California, especially in the San Francisco Bay Area, Cantonese has historically and continues to dominate in the Chinatowns of San Francisco and Oakland, as well as the surrounding suburbs and metropolitan area, although since the late 2000s, a concentration of Mandarin speakers has formed in Silicon Valley. In contrast, Southern California hosts a much larger Mandarin-speaking population, with Cantonese found in more historical Chinese communities such as that of Chinatown, Los Angeles, and older Chinese ethnoburbs such as San Gabriel, Rosemead, and Temple City. Mandarin predominates in much of the emergent Chinese American enclaves in eastern Los Angeles County and other areas of the metropolitan region.