Portola Valley is a rural residential community at the southwestern end of San Mateo County. It covers the heavily wooded hills of the Santa Cruz Mountains and contains upscale homes and estates. Protected from the winds and fog that characterize most of the bay area, the climate is nearly perfect. Stanford University is nearby and residents have quick access to I-280 and the extensive business areas of Menlo Park and Palo Alto. Excellent schools and low crime along with the natural beauty of the area attract the affluent families of the Lower Peninsula and Silicone Valley. Click here for more Portola Valley information.