In 2021, San Mateo County, CA had a population of 762k people with a median age of 40 and a median household income of $136,837. Between 2020 and 2021 the population of San Mateo County, CA declined from 765,623 to 762,488, a −0.409% decrease and its median household income grew from $128,091 to $136,837, a 6.83% increase.
The 5 largest ethnic groups in San Mateo County, CA are White (Non-Hispanic) (37.8%), Asian (Non-Hispanic) (29.6%), Other (Hispanic) (10.4%), White (Hispanic) (8.11%), and Two+ (Hispanic) (4.57%).
None of the households in San Mateo County, CA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
85.7% of the residents in San Mateo County, CA are U.S. citizens.
In 2021, the median property value in San Mateo County, CA was $1.23M, and the homeownership rate was 59.8%.
Most people in San Mateo County, CA drove alone to work, and the average commute time was 28.7 minutes. The average car ownership in San Mateo County, CA was 2 cars per household.