Foster City is located in California. Foster City, California has a population of 33,529. Foster City is more family-centric than the surrounding county with 41.33% of the households containing married families with children. The county average for households married with children is 36.67%.
The median household income in Foster City, California is $136,383. 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 Foster City is 40.4 years.
The average high temperature in July is 82 degrees, with an average low temperature in January of 40.4 degrees. The average rainfall is approximately 21.7 inches per year, with 0 inches of snow per year.
