State
County
Land Area
14.9 sq mi
Density
3,694.90/sq mi
2020 Growth Rate
-0.70%
Growth Since 2010
-1.07%
Rank in State
Rank in Country
Diamond Bar is a city located in 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. For every 100 females there are 92.3 males.
According to the most recent ACS, the racial composition of Diamond Bar was:
| Race | Population | Percentage |
|---|---|---|
| Asian | 32,808 | 58.37% |
| White | 15,559 | 27.68% |
| Some Other Race | 3,411 | 6.07% |
| Two or More Races | 2,126 | 3.78% |
| Black or African American | 2,040 | 3.63% |
| American Indian and Alaska Native | 205 | 0.36% |
| Native Hawaiian and Other Pacific Islander | 62 | 0.11% |
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 17,904 | 3.13 | 76 |
| Married | 11,688 | 3.54 | 79.3 |
| Non Family | 3,137 | 1.29 | 70.8 |
| Female | 2,288 | 3.22 | 72.7 |
| Male | 791 | 4.07 | 56.8 |
3.47
Average Family Size
3.13
Average Household Size
| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 1,400 | 3.43% |
| 9th to 12th Grade | 969 | 2.37% |
| High School Graduate | 5,929 | 14.53% |
| Some College | 6,619 | 16.22% |
| Associates Degree | 3,497 | 8.57% |
| Bachelors Degree | 14,612 | 35.80% |
| Graduate Degree | 7,784 | 19.07% |
| Name | Total | High School | Bachelors |
|---|---|---|---|
| Asian | 24,082 | 22,824 | 15,853 |
| White | 7,601 | 7,352 | 3,433 |
| Hispanic | 6,934 | 6,130 | 2,027 |
| Other Race | 2,254 | 1,933 | 539 |
| Black | 1,404 | 1,346 | 725 |
| Multiple Races | 1,050 | 1,024 | 447 |
| Native American | 116 | 116 | 43 |
| Islander | 46 | 46 | 10 |
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%.
$50,892
Average Earnings
$61,114
Average Male
$42,455
Average Female
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.
| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| Asian | 32,774 | 1,937 | 5.91% |
| Hispanic | 10,447 | 705 | 6.75% |
| White | 9,550 | 545 | 5.71% |
| Other | 3,398 | 238 | 7.00% |
| Black | 2,033 | 186 | 9.15% |
| Multiple | 2,126 | 165 | 7.76% |
| Native | 205 | 10 | 4.88% |
6.14%
Overall Poverty Rate
6.49%
Male Poverty Rate
5.81%
Female Poverty Rate
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%.
58.2%
Overall Marriage Rate
61.6%
Male Marriage Rate
55.2%
Female Marriage Rate
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.
| Name | Veterans | % of Total |
|---|---|---|
| White | 1,084 | 8.42% |
| Hispanic | 329 | 4.15% |
| Asian | 191 | 0.73% |
| Black | 94 | 5.56% |
| 2 or More | 81 | 6.42% |
| Other | 61 | 2.29% |
| Hawaiian | 15 | 24.19% |
| Indian | 10 | 6.94% |
10.03%
Veteran Poverty Rate
28.26%
Veteran Disability Rate
62.8%
Labor Force Participation
59.2%
Employment Rate
5.6%
Unemployment Rate
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
54.49%
Native Born
45.51%
Foreign Born
13.36%
Non Citizen
32.15%
Naturalized
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.
| Year | Population | Growth | Annual Growth Rate |
|---|---|---|---|
| 2021 | 54,948 | -386 | -0.70% |
| 2020 | 55,334 | -386 | -0.69% |
| 2019 | 55,720 | -386 | -0.69% |
| 2018 | 56,106 | -228 | -0.40% |
| 2017 | 56,334 | -247 | -0.44% |
| 2016 | 56,581 | 152 | 0.27% |
| 2015 | 56,429 | 150 | 0.27% |
| 2014 | 56,279 | 46 | 0.08% |
| 2013 | 56,233 | 146 | 0.26% |
| 2012 | 56,087 | 233 | 0.42% |
| 2011 | 55,854 | 266 | 0.48% |
| 2010 | 55,588 | -699 | -0.12% |
| 2000 | 56,287 | 2,615 | 0.48% |
| 1990 | 53,672 | 25,627 | 6.71% |
| 1980 | 28,045 | 17,469 | 10.24% |
| 1970 | 10,576 | 0.00% |