In 2018, San Mateo County, CA had a population of 770k people with a median age of 39.9 and a median household income of $124,425. Between 2017 and 2018 the population of San Mateo County, CA declined from 771,410 to 769,545, a -0.242% decrease and its median household income grew from $116,653 to $124,425, a 6.66% increase.
The 5 largest ethnic groups in San Mateo County, CA are White (Non-Hispanic) (38.4%), Asian (Non-Hispanic) (29.1%), White (Hispanic) (11.7%), Some Other Race (Hispanic) (9.86%), and Two or More Races (Non-Hispanic) (4.25%). 45.8% of the people in San Mateo County, CA speak a non-English language, and 85.2% are U.S. citizens.
The median property value in San Mateo County, CA is $1.21M, and the homeownership rate is 60.5%. Most people in San Mateo County, CA commute by Drove Alone, and the average commute time is 28.1 minutes. The average car ownership in San Mateo County, CA is 2 cars per household.