75% of Bay Area Hispanics are Mexican. The 2nd largest group is El Salvador at 8%.
The Latino population is spread out through the Bay Area, but have largest populations in San Jose, in The Peninsula the cities of Redwood City, East Palo Alto, South San Francisco, East Bay cities namely Oakland, Richmond, Concord and Antioch, and in Sonoma County.
San Francisco's Mission District is home to a thriving Mexican American community, as well as many residents of Salvadoran and Guatemalan descent.