Portola Valley is an incorporated town in San Mateo County, California, United States, which was founded in 1964. It is the wealthiest town in America per the American Community Survey, based on per-capita income for communities larger than 4,000. Home prices are also among the highest in the nation.
Surrounded by wooded hills, this pristine and picturesque town of 4500 residents is located just west of Stanford University in a green and gold valley astride the world-famous San Andreas Fault. The Town values its environmental and historic heritage, its excellent public schools and its economical Town government supported by a multitude of volunteers. An extensive trail system, scenic roads, open space and natural views contribute to one's feeling of being in the country, as do architectural guidelines that stress "blending in." Commercial activity is encouraged to the extent that it primarily meets needs of residents of the community. These factors have enabled the town to retain a rural ambiance reminiscent of earlier days.