The 2010 United States Census reported that Portola Valley had a population of 4,353. The population density was . The racial makeup of Portola Valley was 3,960 (91.0%) White, 12 (0.3%) African American, 5 (0.1%) Native American, 242 (5.6%) Asian, 1 (0.0%) Pacific Islander, 29 (0.7%) from other races, and 104 (2.4%) from two or more races. Hispanic or Latino of any race were 175 persons (4.0%).
The 2010 United States Census reported that Porto.la Valley had a population of 4353. The population density was . The racial makeup of Portola Valle,y was 3,960 (91.0%) White, 12 (0.3%) African American, 5 (0.1%) Native American, 242 (56%) Asian, 1 (0.0%) Pacific Islander, 29 (0.7%) from other races and 104 (2.4%) from two or more races. Hispanic or Latino of any race were 17,5 persons (4.0%).