Diamond Bar, California Population 2024

51,039

Diamond Bar is a city located in Los Angeles County California. Diamond Bar has a 2024 population of 51,039. Diamond Bar is currently declining at a rate of -1.75% annually and its population has decreased by -7.03% since the most recent census, which recorded a population of 54,896 in 2020.

The average household income in Diamond Bar is $134,435 with a poverty rate of 8.65%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Diamond Bar is 44.7 years, 42.9 years for males, and 45.6 years for females.

Diamond Bar Demographics

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

  • Asian: 59.39%
  • White: 21.28%
  • Two or more races: 7.63%
  • Other race: 7.18%
  • Black or African American: 3.51%
  • Native American: 0.88%
  • Native Hawaiian or Pacific Islander: 0.13%
Land Area (mi²)
14.9 sq mi
Density (mi²)
3,432.0/sq mi
Growth Since 2020
-7.03% (-3,857)
The current population of Diamond Bar, California is 51,039 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 54,896.

Diamond Bar, California Population 2024

Population by Race

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Race
Population
Percentage (of total)
Asian32,39059.39%
White11,60421.28%
Two or more races4,1607.63%
Other race3,9157.18%
Black or African American1,9123.51%
Native American4810.88%
Native Hawaiian or Pacific Islander720.13%
showing: 7 rows

Asian

White

Two or more races

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Diamond Bar Population by Race

Diamond Bar Population Pyramid 2024

Diamond Bar Median Age

44.7

Total

42.9

Male

45.6

Female

Diamond Bar Adults

There are 43,920 adults, (10,114 of whom are seniors) in Diamond Bar.

Diamond Bar Age Dependency

61.3

Age Dependency Ratio

29.9

Old Age Dependency Ratio

31.4

Child Dependency Ratio

Diamond Bar Sex Ratio

Female28,51852.29%
Male26,01647.71%

Diamond Bar Population by Age

Diamond Bar Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All17,8203.0577.422.6
Married11,3633.4982.517.5
Non Family3,3701.470.829.2
Female1,9653.1165.234.8
Male1,1223.4366.833.2
showing: 5 rows

3.35

Average Family Size

3.05

Average Household Size

77.4%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Diamond Bar Households and Families

Male

Female

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Diamond Bar Educational Attainment by Sex (over 25)

Diamond Bar Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

The highest rate of high school graduation is among white people with a rate of 95.7%.

The highest rate of bachelors degrees is among asian people with a rate of 63.68%.

Diamond Bar Educational Attainment by Race

All

Male

Female

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

$57,071

Average Earnings

$64,883

Average Male

$48,991

Average Female

Diamond Bar Earnings by Educational Attainment

Diamond Bar Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Diamond Bar Language

40.17% of Diamond Bar residents speak only English, while 59.83% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 44.99% of the population.

Diamond Bar Language

Diamond Bar Poverty by Race

rate

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Name
Total
In Poverty
Poverty Rate
Asian32,3403,2279.98%
Hispanic10,3138247.99%
White7,6015116.72%
Multiple4,1442836.83%
Other3,9022777.1%
Black1,9101316.86%
Islander721318.06%
showing: 7 rows

8.65%

Overall Poverty Rate

8.5%

Male Poverty Rate

8.78%

Female Poverty Rate

Poverty in Diamond Bar

The race most likely to be in poverty in Diamond Bar is Islander, with 18.06% below the poverty level.

The race least likely to be in poverty in Diamond Bar is White, with 6.72% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.55%. Among those working part-time, it was 8.82%, and for those that did not work, the poverty rate was 17.44%.

Diamond Bar Poverty

rate

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Rate
Poverty
Less Than 9th Grade21.77%
High School9.7%
Some College6.85%
Bachelors or Greater5.81%
showing: 4 rows

Diamond Bar Poverty Rate by Education

rate

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Rate
Poverty
Female Unemployed27.88%
Male Unemployed8.04%
Male Employed2.28%
Female Employed1.92%
showing: 4 rows

Diamond Bar Poverty Rate by Employment Status and Sex

Diamond Bar Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

mean

median

Income by Household Type

Diamond Bar Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

56.5%

Overall Marriage Rate

59.3%

Male Marriage Rate

54.0%

Female Marriage Rate

Diamond Bar Married by Age and Sex

male

female

Diamond Bar Marriage

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

Diamond Bar Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Diamond Bar Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,337

Number of Veterans

1,250

Male Veterans

87

Female Veterans

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Diamond Bar Veterans by War

count

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Diamond Bar Veterans by Age

count

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Diamond Bar Veterans by Race

Diamond Bar Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

7.63%

Veteran Poverty Rate

20.64%

Veteran Disability Rate

Diamond Bar Veterans by Education

LaborForceParticipation

62%

Labor Force Participation

58.7%

Employment Rate

5.2%

Unemployment Rate

Diamond Bar Employment by Age

LaborForceParticipation

Diamond Bar Employment by Race

LaborForceParticipation

Diamond Bar Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

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

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

45.48%

Born in Diamond Bar

54.82%

Native Born

45.18%

Foreign Born

12.97%

Non Citizen

32.21%

Naturalized

Place of Birth

54.82% of Diamond Bar residents were born in the United States, with 45.48% having been born in California. 12.97% 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

Note: data after 2022 is projected based on recent change

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

Year
Population
Growth
Growth Rate
202946,499-908-1.92%
202847,407-908-1.88%
202748,315-908-1.84%
202649,223-908-1.81%
202550,131-908-1.78%
202451,039-908-1.75%
202351,947-908-1.72%
202252,855-908-1.69%
202153,763-1,133-2.06%
202054,896-593-1.07%
201955,489-541-0.97%
201856,030-368-0.65%
201756,398-171-0.3%
201656,5691270.23%
201556,4422640.47%
201456,178700.12%
201356,1081400.25%
201255,9682020.36%
201155,7662070.37%
201055,559-728-1.29%
200056,2872,6154.87%
199053,67225,62791.38%
198028,04517,469165.18%
197010,576
showing: 24 rows

Diamond Bar Population by Year