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CITY · 2020 ACS

Diamond Bar

California · 55,072 residents · 14.878 sq mi
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The short version

Diamond Bar is significantly wealthier than the US average, with a median household income of $100,723. Population has held roughly steady since 2000. 54% of adults hold a bachelor's degree or higher, well above the national rate of 33%. Median home value has roughly tripled since 2000, reaching $690,500. Households here earn about 28% more than the California median.

At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 43.8
US median: 38.8
More educated
54% hold a bachelor's degree
US average: 33%
Less affordable
home values up 93%, inflation adjusted
US median home: $265,253
Section 01

Population & growth

Total population
55,072
−2%since 2000
from 56,287 in 2000
1990 – 2025
Median age
43.8
+20%since 2000
from 36.5 in 2000
US average: 38.8
Population, 1990 – 2024
53K54K55K56K57K1990201020202024Diamond Bar
202453K
1990201020202024
Age distribution, 2020
Under 53.9%(2,150)
US avg: 5.6%
5 to 95%(2,752)
US avg: 6.1%
10 to 145.6%(3,111)
US avg: 6.5%
15 to 196.4%(3,499)
US avg: 6.6%
20 to 246.5%(3,567)
US avg: 6.7%
25 to 3412.2%(6,699)
US avg: 13.5%
35 to 4411.9%(6,579)
US avg: 12.7%
45 to 5414.5%(7,987)
US avg: 12.3%
55 to 6415.1%(8,322)
US avg: 13.1%
65 to 7412%(6,592)
US avg: 10%
75 to 845.3%(2,892)
US avg: 4.9%
85 and over1.7%(922)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$100,723
−3%inflation adjusted, since 2000
from $68,871 in 2000
US average: $66,278
1990 – 2024
Per capita income
$40,550
+59%since 2000
from $25,472 in 2000
US average: $35,364
Households earning $100K+
62.0%
+4.5 ptssince 2009
from 57.5% in 2009
US average: 43.9%
Poverty rate
6.5%
+0.5 ptssince 2000
from 6.0% in 2000
US average: 12.8%
Workforce by industry, 2020
Information11.9%
US avg: 11.1%
Other services9.1%
US avg: 6.6%
Retail trade8.6%
US avg: 10%
Public administration6.4%
US avg: 4.7%
Transportation & warehousing6.3%
US avg: 2.5%
Finance & insurance6.1%
US avg: 5.5%
Professional, scientific, technical5.2%
US avg: 4.7%
Wholesale trade3.5%
US avg: 6.7%
Arts, entertainment, food1.3%
US avg: 2%
Education & health services1%
US avg: 0.8%
Agriculture, forestry, fishing0.2%
US avg: 1.7%
Construction0.2%
US avg: 1.2%
Manufacturing0%
US avg: 0.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$690,500
+93%inflation adjusted, since 2000
from $237,800 in 2000
US average: $265,253
1990 – 2024
Median gross rent
$2,101
+38%inflation adjusted, since 2000
from $1,012 in 2000
US average: $1,124
Owner-occupied
74.2%
−8.4 ptssince 2000
from 82.6% in 2000
25.8% rent
Afford Score
6.9
+5%since 2009
from 6.5 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
RELATED:See current rent listings in Diamond Bar on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic31%(17,471)
Black4.7%(2,624)
Hispanic / Latino18.5%(10,393)
Asian42.5%(23,922)
Other0%
2020
White, non-Hispanic14.7%(8,117)
Black3.1%(1,717)
Hispanic / Latino19.6%(10,803)
Asian59.2%(32,626)
Other3.6%(1,961)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican13.2%(7,377)
Cuban0.7%(388)
Salvadoran0.6%(332)
Spaniard0.4%(239)
Nicaraguan0.4%(236)
Puerto Rican0.4%(217)
Argentine0.4%(202)
Honduran0.3%(193)
Guatemalan0.3%(148)
Peruvian0.2%(129)
+ 6 more hispanic origin groups with data
Colombian0.2%(119)
Chilean0.2%(99)
Ecuadorian0.1%(62)
Costa Rican0.1%(46)
Panamanian0.1%(36)
Asian origin
Chinese30.5%(17,047)
Korean9%(5,024)
Filipino6.1%(3,413)
Asian Indian3.4%(1,902)
Taiwanese3.2%(1,762)
Japanese1.7%(947)
Vietnamese1.3%(752)
Pakistani0.7%(385)
Burmese0.5%(279)
Bangladeshi0.4%(220)
Indonesian0.4%(196)
Thai0.2%(94)
+ 3 more asian origin groups with data
Cambodian0.2%(90)
Nepalese0.1%(40)
Pacific Islander origin
Chamorro0.1%(68)
Samoan0%(8)
Ancestry
German3%(1,704)
Irish2.6%(1,467)
English2.3%(1,293)
Italian1.8%(1,020)
American1.3%(723)
French1%(543)
Scottish0.5%(291)
Polish0.5%(256)
Lebanese0.4%(244)
Romanian0.4%(230)
Russian0.4%(226)
+ 34 more ancestry groups with data
Iranian0.3%(190)
Norwegian0.3%(187)
Armenian0.3%(171)
Dutch0.3%(169)
Welsh0.3%(158)
Greek0.3%(156)
Scotch-Irish0.3%(146)
Syrian0.2%(132)
Swedish0.2%(112)
British0.2%(107)
West Indian0.2%(107)
Arab0.2%(89)
Nigerian0.2%(86)
Egyptian0.1%(71)
Jamaican0.1%(68)
Swiss0.1%(61)
Palestinian0.1%(53)
Turkish0.1%(53)
Ukrainian0.1%(52)
Czech0.1%(48)
Belgian0.1%(34)
Bulgarian0.1%(34)
Canadian0%(27)
Ghanaian0%(19)
Israeli0%(18)
Guyanese0%(17)
Ethiopian0%(17)
Austrian0%(15)
Finnish0%(12)
Serbian0%(7)
Slovak0%(7)
RANKED:Largest Chinese population · Largest Mexican population · Largest Korean population · Largest Filipino population · Largest Asian Indian population
Section 05

Education

Bachelor's degree or higher
54.0%
+11.6 ptssince 2000
from 42.3% in 2000
US average: 32.9%
High school or higher
93.6%
+2.9 ptssince 2000
from 90.7% in 2000
US average: 88.5%
Graduate degree
18.6%
+5.2 ptssince 2000
from 13.4% in 2000
US average: 12.7%
Section 06

Commute & transportation

Average commute
36.7 min
+34%since 2000
from 27.4 min in 2000
US average: 26.9
Drive alone to work
77.8%
−2.3 ptssince 2009
from 80.2% in 2009
US average: 75.1%
No vehicle available
2.7%
+1.2 ptssince 2009
from 1.5% in 2009
US average: 8.4%
Section 07

Work & employment

Unemployment rate
4.2%
−1.9 ptssince 2011
from 6.0% in 2011
US average: 5.4%
Labor force participation
63.0%
−1.9 ptssince 2011
from 64.9% in 2011
US average: 63.4%
Management & professional
53.0%
−18.9 ptssince 2009
from 72.0% in 2009
US average: 39.3%
Section 08

People & community

Male
48.6%
−0.3 ptssince 2009
from 48.8% in 2009
Female
51.4%
+0.3 ptssince 2009
from 51.2% in 2009
Foreign born
45.4%
+4.0 ptssince 2009
from 41.4% in 2009
US average: 13.5%
Uninsured
4.8%
−82.9 ptssince 2013
from 87.7% in 2013
US average: 8.8%
Marital status (2024)
Men 15+
Never married33.8%(7,320)
Married58.4%(12,648)
Widowed2.7%(586)
Divorced5.1%(1,096)
Women 15+
Never married27.6%(6,520)
Married54.7%(12,944)
Widowed8.1%(1,905)
Divorced9.6%(2,275)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
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Frequently asked

How many people live in Diamond Bar, California?

Diamond Bar, California has about 55,072 residents according to the 2020 American Community Survey.

What is the median household income in Diamond Bar, California?

The typical household in Diamond Bar, California earns about $100,723 a year. Half of households make more than that, and half make less.

Is Diamond Bar, California expensive?

In Diamond Bar, California, the median home is worth about $690,500, and the typical rent is about $2,101 a month.

How educated are people in Diamond Bar, California?

About 54.0% of adults age 25 and over in Diamond Bar, California hold a bachelor's degree or higher.

What is the poverty rate in Diamond Bar, California?

About 6.5% of people in Diamond Bar, California live below the federal poverty line.

Has Diamond Bar, California grown since 1990?

Yes, Diamond Bar, California has grown since 1990. The population has added about 1,400 residents, a change of about 3 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →