California's 13th State Senate district

California's 13th State Senate district
Current senator	Jerry Hill D–San Mateo
Population (2010)  • Voting age  • Citizen voting age	927,480 719,549 553,079
Demographics	47.57% White 2.57% Black 21.85% Latino 25.28% Asian 0.40% Native American 1.18% Hawaiian/Pacific Islander 0.41% other 0.74% remainder of multiracial
Registered voters	469,817
Registration	50.74% Democratic 18.84% Republican 27.10% No party preference

California's 13th State Senate district is one of 40 California State Senate districts. It is currently represented by Democrat Jerry Hill of San Mateo.

The district encompasses the San Francisco Peninsula and the northwestern reaches of Silicon Valley. It forms the main corridor between the state's third- and fourth-largest and the San Francisco Bay Area's two largest cities: San Jose in the south and San Francisco in the north.