Portola Valley, CA
Portola Valley is an incorporated town in San Mateo County, California, United States. The population was 4,353 at the 2010 census. It was named for Spanish explorer Gaspar de Portola, who led the first party of Europeans to explore the San Francisco Peninsula, in 1769.
Portola Valley is one of the top forty wealthiest towns in the United States of America, with a median household income of $164,479 a year. Within the State of California, Portola Valley is ranked as the sixth wealthiest place. The zip code 94028, which encompasses the whole of Portola Valley, has the 31st most expensive housing prices within the country according to Forbes Magazine 2010.
Portola Valley is located at 37°22′30″N 122°13′7″W / 37.375°N 122.21861°W / 37.375; -122.21861 (37.375023, -122.218635), on the eastern slope of the Peninsula Coastal Range of the Santa Cruz Mountains. The Windy Hill Open Space Preserve is on the town's southwest side and the Jasper Ridge Biological Preserve is on the north side of town. It is off Interstate 280, near Woodside, just west of Palo Alto and Los Altos and south of Menlo Park, and is in a mostly wooded area, with some open plains.