Of the 13,194 citizens living in San Marino City in 2019, 96.9 percent said they were only one race, while 3.1 percent said they were two or more races, according to U.S. Census Bureau data obtained in February.
Of the 19,179 people residing in Stevenson Ranch, CA in 2019, the median age was 41, according to U.S. Census Bureau data obtained by the San Mateo Sun.