Portola Valley, California

Portola Valley is an incorporated town in San Mateo County, California, United States. It was founded in 1964. It is the richest town in America per the American Community Survey. Home prices are also among the highest in the nation.
The average income per household in Portola Valley is $354,744.
The 2010 United States Census reported that Portola Valley had a population of 4,353.