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. Portola Valley is ranked as the sixth wealthiest place in California. 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 also home to some fantastic local schools. CLICK HERE FOR MORE INFORMATION ON SCHOOLS.