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

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