City safety & data profile

Diamond BarCA

Diamond Bar, CA is a 57K-resident city in Los Angeles County with a median household income of $108,281.

Los Angeles County, California. Federal health, economic, and safety indicators for Diamond Bar, drawn from the U.S. Census Bureau American Community Survey, CDC PLACES, and CMS Hospital Compare. Diamond Bar has a population larger than 82% of the 4,640 U.S. cities Areazine tracks, and a median home value of $902,200.

Data updated 2026-07-18

57K
Population
Top 18%
By size
$108,281
Median income
$902,200
Median home
10%
Poverty rate

The read on Diamond Bar

Diamond Bar posts a median household income higher than 75% of U.S. cities Areazine tracks.

Top 25%
by median income, US cities

Where Diamond Bar income ranks nationally

Median household income vs. every place Areazine profiles (place-level ACS)

$108,281 Top 25% higher than 75% of 3,889 places Areazine profiles

$0–$20,000: 0 places Areazine profiles (0%). Below this entry. $20,000–$40,000: 71 places Areazine profiles (2%). Below this entry. $40,000–$60,000: 788 places Areazine profiles (20%). Below this entry. $60,000–$80,000: 1,055 places Areazine profiles (27%). Below this entry. $80,000–$100,000: 768 places Areazine profiles (20%). Below this entry. $100,000–$120,000: 515 places Areazine profiles (13%). This entry sits in this band. $120,000–$140,000: 308 places Areazine profiles (8%). Above this entry. $140,000–$160,000: 171 places Areazine profiles (4%). Above this entry. $160,000–$180,000: 92 places Areazine profiles (2%). Above this entry. $180,000–$200,000: 47 places Areazine profiles (1%). Above this entry. $200,000–$220,000: 28 places Areazine profiles (1%). Above this entry. $220,000–$240,000: 18 places Areazine profiles (0%). Above this entry. $240,000–$260,000: 28 places Areazine profiles (1%). Above this entry. CA $0 $260,000 every profiled place, bucketed by value

Each bar is a $20K-wide band; taller bars hold more places Areazine profiles. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, American Community Survey (place-level) · 2024 ACS 5-year

The quick read

Reading Diamond Bar, CA beyond the headline numbers

Diamond Bar sits inside Los Angeles County, California, at roughly 34.03°N, -117.81°W. Population 56,897, $108,281 median household income. Median home value $902,200, median rent $2,521. Poverty rate 10%, read against that income figure since two cities on the same median can differ underneath it.

CDC PLACES: Diamond Bar's highest-prevalence health measure is short sleep duration at 34.5%, then high blood pressure at 29.5%.

Sources: U.S. Census ACS, CDC PLACES, CMS Hospital Compare, plus live alerts for Diamond Bar from FEMA, NOAA, FDA, and CPSC. Comparison bars benchmark each metric against the national reference.

Population
56,897
Diamond Bar
Median Income
$108,281
+59% vs avg
Median Home Value
$902,200
+296% vs avg
Median Age
45.7
years

10-Year Trends 2013–2024

County-level trend (Los Angeles County) - Diamond Bar's own historical series isn't separately published by the Census Bureau, so these year-over-year figures track the surrounding county, not the city alone.

20132024
Population
9.8M-1%
Median Income
$90,112+61%
Median Home Value
$834,200+99%
Poverty Rate
13.7%-23%
Unemployment
7.3%-36%

Economics

Economics indicators for Diamond Bar, CA
IndicatorValue
Median Rent
$2,521/mo
Poverty Rate
10% -30% vs avg
Unemployment 4.9%
Bachelor's Degree+ 52.8%
Work From Home 18.4%
Public Transit 1%

Population

White 14.6%
African American 3.1%
Asian 62.7%
Two or More Ethnicities 2.2%

Health Profile 15 measures

Health Indicators

Short Sleep Duration
34.5%
High Blood Pressure
29.5%
Physical Inactivity
22%
Obesity
18.2%
Diabetes
12.5%
Frequent Mental Distress
12.3%
Binge Drinking
11.5%
Frequent Physical Distress
10.8%
Current Smoking
7.8%
Current Asthma
7.4%

Preventive Care

Dental Visit 66.7%
Annual Checkup 75.3%

Other Measures

Lack of Health Insurance
5.5%
Coronary Heart Disease
4.7%
Stroke
2.8%

Frequently Asked Questions 5

What is the population of Diamond Bar, CA? ▼
Diamond Bar, CA has a population of 56,897 people, located in Los Angeles County, California.
What is the median household income in Diamond Bar? ▼
The median household income in Diamond Bar, CA is $108,281 per year, per the U.S. Census ACS. The poverty rate is 10%.
What is the median home value in Diamond Bar? ▼
The median home value in Diamond Bar, CA is $902,200. Median rent is $2,521/month.
What are the top health concerns in Diamond Bar? ▼
The top health indicators in Diamond Bar include Short Sleep Duration (34.5%), High Blood Pressure (29.5%), Physical Inactivity (22%). Data from CDC PLACES.
What is the median age in Diamond Bar? ▼
The median age in Diamond Bar, CA is 45.7 years. 52.8% of residents have a bachelor's degree or higher.

Safety Context

Diamond Bar, CA is located in Los Angeles County, California. With a population of 57K and a $108,281 median household income, the community faces health challenges including short sleep duration and high blood pressure. Safety alerts for the Diamond Bar area are monitored from federal and state agencies including FEMA, NOAA, FDA, and CPSC.

Safety Guides

How Product Recalls Work

CPSC, FDA & NHTSA recall process explained

Understanding Weather Alerts

Watch vs warning vs advisory explained

Earthquake Magnitude Explained

What the numbers mean & when to act
All safety guides →

Primary source data

EPA Outdoor Air Quality Data

Federal monitoring network, every measurement we report

AirNow - California

Real-time AQI for every monitored California location

National Weather Service

NOAA active watches, warnings, advisories

CDC Air Quality & Health

Health-impact reference for every AQI category

EPA NAAQS standards

National Ambient Air Quality Standards, the regulatory thresholds

Nearby Cities 8

Walnut, CA 30K Chino Hills, CA 78K Pomona, CA 153K San Dimas, CA 35K La Verne, CA 33K South San Jose Hills, CA 21K Covina, CA 49K Rowland Heights, CA 49K
All cities in California → Compare Diamond Bar vs Walnut → All comparisons → Browse all cities

Using Diamond Bar's profile

Use this as a starting research checklist, not a verdict on whether to live here.

  • Check live recalls, weather and hazard alerts scoped to the Diamond Bar area before relying on national headlines. Check your area
  • Read the poverty rate alongside the income figure, two places with the same median can have very different realities.
  • Compare Diamond Bar against California peers on any ranking lens. Explore California

Population and economics (income, home value, poverty, education) are place-level U.S. Census ACS; health is CDC PLACES; hospital counts reflect facilities in and around the city.

Data Sources

All data on this page comes from official U.S. government sources. Population and economic data from the Census Bureau American Community Survey (2024 5-year estimates, place geography). Health data from the CDC PLACES program (2023). Hospital ratings from CMS Hospital Compare (2024). Climate data from NOAA. Education data from NCES. Cost of living from Bureau of Economic Analysis. Crime statistics, where referenced on Areazine, originate from the FBI Crime Data Explorer. Housing market figures referenced on Areazine come from HUD Fair Market Rents. Census economics and population are at place geography; some health and hospital indicators are reported at the county level (Los Angeles County) where that is the smallest published unit.

Every figure on Areazine is published directly from official U.S. government sources, no number is typed in by an editor. City demographic and health figures are compiled directly from U.S. Census, CDC, and CMS releases, updated quarterly within 30 days of upstream release. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026.