Portola Valley Real EstatePortola Valley is located in California. Portola Valley, California has a population of 4,589. Portola Valley is less family-centric than the surrounding county with 31.07% of the households containing married families with children. The county average for households married with children is 36.67%. The median household income in Portola Valley, California is $244,539. The median household income for the surrounding county is $105,667 compared to the national median of $57,652. The median age of people living in Portola Valley is 54.4 years. Portola Valley WeatherThe average high temperature in July is 77.1 degrees, with an average low temperature in January of 39.5 degrees. The average rainfall is approximately 24.3 inches per year, with 0 inches of snow per year. Portola Valley MapReal estate near Portola ValleyNearby CitiesNearby Cities Homes for Sale |