San Mateo is located in California. San Mateo, California has a population of 104,144. San Mateo is less family-centric than the surrounding county with 27% households with children. The county percentage for households with children is 29%.
The median household income in San Mateo, California is $120,594. The median household income for the surrounding county is $118,763 compared to the national median of $61,963. The median age of people living in San Mateo is 41.7 years.
The average high temperature in July is 70.5 degrees, with an average low temperature in January of 42.9 degrees. The annual precipitation is 23.35.