Diamond Bar

County:: Los Angeles County
County Seat:: No
Area (mi²):: 14.878
State:: California

Diamond Bar is a city located in Los Angeles County, California. Diamond Bar has a 2025 population of 50,144. Diamond Bar is currently declining at a rate of -1.86% annually and its population has decreased by -8.64% since the most recent census, which recorded a population of 54,886 in 2020.

The average household income in Diamond Bar is $137,200 with a poverty rate of 9.11%. The median age in Diamond Bar is 45.6 years: 45.5 years for males, and 45.7 years for females.

Demographics

The racial composition of Diamond Bar includes 62.05% Asian, 17.38% White, 6.83% other race, 3.05% Black or African American, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Asian

White

Two or more races

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
Asian	33,352	62.05%
White	9,342	17.38%
Two or more races	5,142	9.57%
Other race	3,669	6.83%
Black or African American	1,639	3.05%
Native American	517	0.96%
Native Hawaiian or Pacific Islander	89	0.17%

Diamond Bar Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Diamond Bar's average per capita income is $60,969. Household income levels show a median of $106,602. The poverty rate stands at 9.11%.

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	$132,454	-
Families	$120,077	$151,036
Households	$106,602	$137,200
Non Families	$46,618	$65,720

$60,969

Average Income

$106,602

Median Household Income

9.11%

Poverty Rate