San Mateo

County:: San Mateo County
County Seat:: No
Area (mi²):: 12.134
State:: California

San Mateo is a city located in San Mateo County, California. San Mateo has a 2025 population of 98,441. San Mateo is currently declining at a rate of -1.44% annually and its population has decreased by -6.83% since the most recent census, which recorded a population of 105,656 in 2020.

The average household income in San Mateo is $204,984 with a poverty rate of 7.94%. The median age in San Mateo is 38 years: 36.3 years for males, and 40.1 years for females.

Demographics

The racial composition of San Mateo includes 41.24% White, 27.06% Asian, 13.9% other race, and smaller percentages for Native Hawaiian or Pacific Islander, Black or African American, Native American and multiracial populations.

Population by Race

White

Asian

Other race

Two or more races

Native Hawaiian or Pacific Islander

Black or African American

Native American

Race	Population	Percentage (of total)
White	42,707	41.24%
Asian	28,025	27.06%
Other race	14,392	13.9%
Two or more races	13,801	13.33%
Native Hawaiian or Pacific Islander	1,701	1.64%
Black or African American	1,539	1.49%
Native American	1,390	1.34%

San Mateo Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

San Mateo's average per capita income is $92,841. Household income levels show a median of $152,669. The poverty rate stands at 7.94%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$221,509	-
Families	$190,044	$241,330
Households	$152,669	$204,984
Non Families	$101,675	$136,387

$92,841

Average Income

$152,669

Median Household Income

7.94%

Poverty Rate