Diamond Bar, California Population 2021

54,948
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Diamond Bar is a city located in Los Angeles County California. With a 2020 population of 54,948, it is the 165th largest city in California and the 710th largest city in the United States . Diamond Bar is currently declining at a rate of -0.70% annually and its population has decreased by -1.07% since the most recent census, which recorded a population of 55,544 in 2010. Diamond Bar reached it's highest population of 56,581 in 2016. Spanning over 15 miles, Diamond Bar has a population density of 3,695 people per square mile.

The average household income in Diamond Bar is $119,892 with a poverty rate of 6.14%. The median rental costs in recent years comes to $2,071 per month, and the median house value is $664,400. The median age in Diamond Bar is 42.6 years, 40.3 years for males, and 44.3 years for females.

Diamond Bar Demographics

According to the most recent ACS, the racial composition of Diamond Bar was:

  • Asian: 58.37%
  • White: 27.68%
  • Other race: 6.07%
  • Two or more races: 3.78%
  • Black or African American: 3.63%
  • Native American: 0.36%
  • Native Hawaiian or Pacific Islander: 0.11%
The current population of Diamond Bar, California is 54,948 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 56,106.The last official US Census in 2010 recorded the population at 55,544.

Diamond Bar, California Population 2021

Population by Race

Race Population Percentage
Asian32,80858.37%
White15,55927.68%
Some Other Race3,4116.07%
Two or More Races2,1263.78%
Black or African American2,0403.63%
American Indian and Alaska Native2050.36%
Native Hawaiian and Other Pacific Islander620.11%
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Diamond Bar Population by Race

Diamond Bar Population Pyramid $2021

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Diamond Bar Median Age

42.6


Total

40.3


Male

44.3


Female

Diamond Bar Adults

There are 44,944 adults, (9,389 of whom are seniors) in Diamond Bar.

Diamond Bar Age Dependency

58.1

Age Dependency Ratio

26.4

Old Age Dependency Ratio

31.7

Child Dependency Ratio

Diamond Bar Sex Ratio

Female

29,228

52.00%

Male

26,983

48.00%

Diamond Bar Population by Age

Diamond Bar Renter vs Owner Occupied by Household Type

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Diamond Bar Household Types

Type Owner Renter
Married79.3%20.7%
All76%24%
Female72.7%27.3%
Non Family70.8%29.2%
Male56.8%43.2%

76.0%

Rate of Home Ownership

Diamond Bar Households and Families

Type Count Average Size Owned
All17,9043.1376
Married11,6883.5479.3
Non Family3,1371.2970.8
Female2,2883.2272.7
Male7914.0756.8

3.47

Average Family Size

3.13

Average Household Size

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Diamond Bar Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1,4003.43%
9th to 12th Grade9692.37%
High School Graduate5,92914.53%
Some College6,61916.22%
Associates Degree3,4978.57%
Bachelors Degree14,61235.80%
Graduate Degree7,78419.07%
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Diamond Bar Educational Attainment by Sex (over 25)

Diamond Bar Educational Attainment by Race

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Race Total High School Bachelors
Asian24,08222,82415,853
White7,6017,3523,433
Hispanic6,9346,1302,027
Other Race2,2541,933539
Black1,4041,346725
2+ Races1,0501,024447
Native American11611643
Islander464610

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 65.83%.

Diamond Bar Educational Attainment by Race

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Name Average Male Female
Overall$50,892$61,114$42,455
Less Than 9th Grade$28,250$26,806$29,844
High School Graduate$32,217$41,648$23,561
Some College$40,669$47,820$32,492
Bachelors Degree$54,635$64,597$43,846
Graduate Degree$80,337$90,595$63,943

$50,892

Average Earnings

$61,114

Average Male

$42,455

Average Female

Diamond Bar Earnings by Educational Attainment

Diamond Bar Language by Age

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Diamond Bar Language

39.43% of Diamond Bar residents speak only English, while 60.57% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 44.66% of the population.

Diamond Bar Language

Diamond Bar Poverty by Race

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Name Total In Poverty Poverty Rate
Asian32,7741,9375.91%
Hispanic10,4477056.75%
White9,5505455.71%
Other3,3982387.00%
Black2,0331869.15%
Multiple2,1261657.76%
Native205104.88%

6.14%

Overall Poverty Rate

6.49%

Male Poverty Rate

5.81%

Female Poverty Rate

Poverty in Diamond Bar

The race most likely to be in poverty in Diamond Bar is Black, with 9.15% below the poverty level.

The race least likely to be in poverty in Diamond Bar is Native, with 4.88% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.54%. Among those working part-time, it was 9.67%, and for those that did not work, the poverty rate was 10.44%.

Diamond Bar Poverty

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Name Poverty
Less Than 9th Grade13.46%
High School7.47%
Some College6.87%
Bachelors or Greater4.29%

Diamond Bar Poverty Rate by Education

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Rate Poverty
Female Unemployed17.24%
Male Unemployed11.20%
Male Employed2.92%
Female Employed2.69%

Diamond Bar Poverty Rate by Employment Status and Sex

Diamond Bar Income by Household Type

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Name Median Mean
Households$99,083$119,892
Families$106,569$128,834
Married Families$115,967-
Non Families$55,171$72,904
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Income by Household Type

Diamond Bar Marital Status

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Marriage Rates

58.2%

Overall Marriage Rate

61.6%

Male Marriage Rate

55.2%

Female Marriage Rate

Diamond Bar Married by Age and Sex

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Diamond Bar Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Diamond Bar Marital Status by Race

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Diamond Bar Marital Status

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1,536

Number of Veterans

1,509

Male Veterans

27

Female Veterans

War Veterans
Vietnam678
Second Gulf War196
First Gulf War185
Korea163
World War II27

Diamond Bar Veterans by War

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Age Group Veterans
65 to 74581
75+413
55 to 64231
35 to 54223
18 to 3488

Diamond Bar Veterans by Age

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Name Veterans % of Total
White1,0848.42%
Hispanic3294.15%
Asian1910.73%
Black945.56%
2+ Races816.42%
Other Race612.29%
Islander1524.19%
Native American106.94%

Diamond Bar Veterans by Race

Diamond Bar Veterans by Education

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10.03%

Veteran Poverty Rate

28.26%

Veteran Disability Rate

Diamond Bar Veterans by Education

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62.8%

Labor Force Participation

59.2%

Employment Rate

5.6%

Unemployment Rate

Diamond Bar Employment by Age

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Diamond Bar Employment by Race

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Diamond Bar Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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43.32%

Born in Diamond Bar

54.49%

Native Born

45.51%

Foreign Born

13.36%

Non Citizen

32.15%

Naturalized

Place of Birth

54.49% of Diamond Bar residents were born in the United States, with 43.32% having been born in California. 13.36% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Diamond Bar Place of Birth

Year Population Growth Annual Growth Rate
202154,948-386-0.70%
202055,334-386-0.69%
201955,720-386-0.69%
201856,106-228-0.40%
201756,334-247-0.44%
201656,5811520.27%
201556,4291500.27%
201456,279460.08%
201356,2331460.26%
201256,0872330.42%
201155,8542660.48%
201055,588-699-0.12%
200056,2872,6150.48%
199053,67225,6276.71%
198028,04517,46910.24%
197010,5760.00%

Diamond Bar Population by Year