race were 313,636 persons (33.2%). Among the Hispanic population, 28.2% are Mexican , 0.7% Salvadoran , 0.5% Puerto Rican , and 0.3% Nicaraguan . Non-Hispanic Whites were 28.7% of the population in 2010, [ 38 ] down from 60.4% in 1970. [ 14 ] The Census reported that 932,620 people (98.6%