Diamond Bar Flag

Diamond Bar

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 51,612 . Diamond Bar is currently declining at a rate of -1.3% annually and its population has decreased by -6.18% since the most recent census, which recorded a population of 55,010 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. For every 100 females there are 87.0 males.

51.6K
Total Population
3,469
Density (mi²)
-680 -1.3%
Growth

Diamond Bar Population

Diamond Bar Population

Data after 2023 is projected based on recent change

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 (62.05%)

White (17.38%)

Two or more races (9.57%)

Other race (6.83%)

Black or African American (3.05%)

Native American (0.96%)

Native Hawaiian or Pacific Islander (0.17%)

Race
Population
Percentage (of total)
Asian33,35262.05%
White9,34217.38%
Two or more races5,1429.57%
Other race3,6696.83%
Black or African American1,6393.05%
Native American5170.96%
Native Hawaiian or Pacific Islander890.17%

Diamond Bar Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)