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CITY · 2000 CENSUS

Diamond Bar

California · 56,287 residents · 14.9 sq mi
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The short version

Diamond Bar is a city of 56,287 people in California. The typical home is worth $237,800. This is an unusually credentialed place: 42% of adults have a four-year degree. That is roughly 45% ahead of the California median. Owners hold 83% of the housing stock. Households take in $68,871 a year at the median, 62% more than the country as a whole.

At a glance
Wealthier
above the US median
US median: $42,589
Mid-age
median age 36.5
US median: 35.2
More educated
42% hold a bachelor's degree
US average: 24%
More affordable
home values down 34%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

56,287
+5%since 1990
from 53,672 in 1990
1990 – 2025
36.5
+14%since 1990
from 31.9 in 1990
US average: 35.2
Land area
14.9 sq mi
Population, 19902024
53K54K55K56K57K19902000201020202024Diamond Bar
202453K
1990201020202024
Age distribution, 2000
Under 55.7%(3,216)
US avg: 6.8%
5 to 97.4%(4,141)
US avg: 7.3%
10 to 148.6%(4,851)
US avg: 7.3%
15 to 198.2%(4,592)
US avg: 7.2%
20 to 245.9%(3,339)
US avg: 6.7%
25 to 3411.9%(6,693)
US avg: 14.2%
35 to 4417.7%(9,948)
US avg: 16%
45 to 5417.6%(9,921)
US avg: 13.4%
55 to 649.5%(5,373)
US avg: 8.6%
65 to 744.7%(2,636)
US avg: 6.5%
75 to 842.3%(1,286)
US avg: 4.4%
85 and over0.5%(291)
US avg: 1.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

$68,871
−14%inflation adjusted, since 1990
from $60,651 in 1990
US average: $42,589
1990 – 2024
$25,472
+18%since 1990
from $21,497 in 1990
US average: $21,522
6.0%
+2.5 ptssince 1990
from 3.5% in 1990
US average: 12.4%
Section 03

Housing

$237,800
−34%inflation adjusted, since 1990
from $271,500 in 1990
US average: $120,530
1990 – 2024
$1,012
−18%inflation adjusted, since 1990
from $940 in 1990
US average: $602
82.6%
−3.1 ptssince 1990
from 85.7% in 1990
17.4% rent
Section 04

Race & ethnicity

1990
White, non-Hispanic63.8%(34,252)
Black5.7%(3,036)
Hispanic / Latino16.5%(8,839)
Asian24.9%(13,372)
2000
White, non-Hispanic31%(17,471)
Black4.7%(2,624)
Hispanic / Latino18.5%(10,393)
Asian42.5%(23,922)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Mexican14%(7,474)
Cuban0.4%(206)
Salvadoran0.3%(157)
Puerto Rican0.3%(141)
Peruvian0.2%(100)
Spaniard0.2%(96)
Ecuadorian0.2%(93)
Guatemalan0.2%(92)
Colombian0.1%(52)
Chilean0.1%(49)
+ 3 more hispanic origin groups with data
Asian origin
Chinese33.3%(17,747)
Korean7.7%(4,125)
Filipino7.3%(3,917)
Taiwanese3.9%(2,094)
Asian Indian3.2%(1,722)
Japanese1.5%(796)
Vietnamese1.5%(784)
Thai0.7%(387)
Burmese0.4%(210)
Pakistani0.3%(186)
Indonesian0.2%(109)
Cambodian0.1%(68)
+ 4 more asian origin groups with data
Malaysian0.1%(49)
Kazakh0.1%(44)
Nepalese0.1%(41)
Pacific Islander origin
Tongan0.3%(156)
Samoan0.1%(53)
Chamorro0%(21)
Ancestry
German3.3%(1,761)
English2.9%(1,553)
Irish2%(1,058)
American1.3%(714)
Italian1.2%(640)
French1.2%(624)
Arab1%(554)
Armenian0.7%(384)
Lebanese0.7%(361)
Scottish0.5%(264)
Dutch0.4%(199)
+ 32 more ancestry groups with data
Greek0.3%(163)
Polish0.3%(142)
Ukrainian0.3%(141)
Swedish0.3%(139)
Welsh0.3%(134)
Latvian0.2%(118)
Jordanian0.2%(116)
Russian0.2%(93)
British0.2%(92)
Norwegian0.2%(85)
Swiss0.1%(67)
Scotch-Irish0.1%(66)
Portuguese0.1%(63)
Czech0.1%(58)
Syrian0.1%(54)
Danish0.1%(45)
Bulgarian0.1%(34)
Finnish0%(25)
Kenyan0%(24)
Hungarian0%(23)
Croatian0%(22)
Nigerian0%(22)
Iranian0%(20)
Jamaican0%(20)
Canadian0%(16)
Austrian0%(14)
Slovene0%(12)
Haitian0%(12)
Israeli0%(6)
Section 05

Education

42.3%
+5.3 ptssince 1990
from 37.0% in 1990
US average: 24.4%
High school or higher
90.7%
+0.1 ptssince 1990
from 90.6% in 1990
US average: 80.3%
13.4%
+2.2 ptssince 1990
from 11.2% in 1990
US average: 8.8%
Section 06

Commute & transportation

27.4 min
−11%since 1990
from 30.9 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status
Men 15+
Never married30.3%(6,409)
Married63.7%(13,488)
Widowed1.6%(330)
Divorced4.5%(952)
Women 15+
Never married23.2%(5,291)
Married61.6%(14,044)
Widowed6.3%(1,443)
Divorced8.9%(2,023)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

3.4%
−8.9 ptssince 2013
from 12.3% in 2013
US average: 8.4%
52.1%
−5.5 ptssince 2020
from 57.6% in 2020
US average: 54.8%
Direct-purchase
20.9%
+1.5 ptssince 2020
from 19.4% in 2020
US average: 13.8%
20.7%
+3.3 ptssince 2020
from 17.4% in 2020
US average: 18.4%
19.9%
+5.0 ptssince 2020
from 14.9% in 2020
US average: 20.9%
VA health care
0.7%
+0.1 ptssince 2020
from 0.6% in 2020
US average: 2.2%
Any private
69.3%
−5.4 ptssince 2020
from 74.7% in 2020
US average: 67.1%
Any public
36.5%
+7.5 ptssince 2020
from 29.0% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)23.6%(254)
US avg: 26.4%
Gulf War (1990s)25.7%(277)
US avg: 24.3%
Vietnam era22.8%(246)
US avg: 33.1%
Korean War11.1%(120)
US avg: 4.5%
World War II0%(0)
US avg: 1%

Share of the 1,077 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
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Frequently asked

How many people live in Diamond Bar, California?

Diamond Bar, California has about 56,287 residents according to the 2000 Census.

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

The typical household in Diamond Bar, California earns about $68,871 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 $237,800, and the typical rent is about $1,012 a month.

How educated are people in Diamond Bar, California?

About 42.3% 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 6.0% 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 2,615 residents, a change of about 5 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 →