In 2010, 9.2% of the county's population was foreign born, with 49.6% being naturalized American citizens. Of foreign born residents, 38.0% were born in Latin America, 35.7% born in Asia, 17.9% were born in Europe, 5.9% born in Africa, 1.9% in North America, and 0.5% were born in Oceania.
In 2010 92% of the county's population was foreign born with 496% being naturalized American citizens Of foreign born residents 380% were born in Latin America 357% born in Asia 179% were born in Europe 59% born in Africa 19% in North America and 05% were born in Oceania