Belmont

County:: San Mateo County
County Seat:: No
Area (mi²):: 4.63
State:: California

Belmont is a city located in San Mateo County, California. Belmont has a 2025 population of 25,531. Belmont is currently declining at a rate of -2.09% annually and its population has decreased by -9.65% since the most recent census, which recorded a population of 28,258 in 2020.

The average household income in Belmont is $258,184 with a poverty rate of 6.46%. The median age in Belmont is 40.4 years: 40.6 years for males, and 40.2 years for females.

Demographics

The racial composition of Belmont includes 50.68% White, 29.46% Asian, 5.76% other race, and smaller percentages for Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Asian

Two or more races

Other race

Black or African American

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	13,940	50.68%
Asian	8,104	29.46%
Two or more races	2,857	10.39%
Other race	1,585	5.76%
Black or African American	589	2.14%
Native Hawaiian or Pacific Islander	347	1.26%
Native American	83	0.3%

Belmont Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Belmont's average per capita income is $130,809. Household income levels show a median of $207,609. The poverty rate stands at 6.46%.

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
Families	$250,001	$317,019
Married Families	$250,001	-
Households	$207,609	$258,184
Non Families	$97,350	$118,574

$130,809

Average Income

$207,609

Median Household Income

6.46%

Poverty Rate