Atherton

County:: San Mateo County
County Seat:: No
Area (mi²):: 5.016
State:: California

Atherton is a town located in San Mateo County, California. Atherton has a 2025 population of 6,591. Atherton is currently declining at a rate of -1.73% annually and its population has decreased by -8.09% since the most recent census, which recorded a population of 7,171 in 2020.

The average household income in Atherton is $619,754 with a poverty rate of 3.33%. The median age in Atherton is 49 years: 48.1 years for males, and 50 years for females.

Demographics

The racial composition of Atherton includes 69.79% White, 18.57% Asian, and smaller percentages for other race, 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	4,900	69.79%
Asian	1,304	18.57%
Two or more races	632	9%
Other race	111	1.58%
Black or African American	57	0.81%
Native Hawaiian or Pacific Islander	13	0.19%
Native American	4	0.06%

Atherton Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Atherton's average per capita income is $154,432. Household income levels show a median of $250,001. The poverty rate stands at 3.33%.

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
Households	$250,001	$619,754
Families	$250,001	$695,802
Married Families	$250,001	-
Non Families	$117,379	$297,412

$154,432

Average Income

$250,001

Median Household Income

3.33%

Poverty Rate