In 2019, San Mateo County, CA had a population of 767k people with a median age of 39.9 and a median household income of $138,500. Between 2018 and 2019 the population of San Mateo County, CA declined from 769,545 to 766,573, a −0.386% decrease and its median household income grew from $124,425 to $138,500, a 11.3% increase.
The 5 largest ethnic groups in San Mateo County, CA are White (Non-Hispanic) (38.4%), Asian (Non-Hispanic) (29.7%), White (Hispanic) (11.3%), Other (Hispanic) (10.5%), and Two+ (Non-Hispanic) (3.81%). 44.5% of the households in San Mateo County, CA speak a non-English language at home as their primary language.
84.7% of the residents in San Mateo County, CA are U.S. citizens.
The largest universities in San Mateo County, CA are Skyline College (1,253 degrees awarded in 2020), Gurnick Academy of Medical Arts (1,176 degrees), and College of San Mateo (1,122 degrees).
In 2019, the median property value in San Mateo County, CA was $1.23M, and the homeownership rate was 59.3%. Most people in San Mateo County, CA drove alone to work, and the average commute time was 28.1 minutes. The average car ownership in San Mateo County, CA was 2 cars per household.
San Mateo County, CA borders Alameda County, CA, San Francisco County, CA, Santa Clara County, CA, and Santa Cruz County, CA.