Diamond Bar, CA Census Data
Key demographic and economic indicators for Diamond Bar, California from the 2023 American Community Survey (ACS) 5-year estimates.
Updated: 2026-03-23 · Source: U.S. Census Bureau, ACS 2023
Population
53,750
46.5% male · 53.5% female
Median Age
45.6
6.9 above the national average (38.7 yrs)
Median Household Income
$106,602
28,064.0 above the national average ($78,538)
Bachelor's Degree or Higher
52.7%
17.7 above the national average (35.0%)
HS diploma or higher: 92.8%
Poverty Rate
9.1%
3.3 below the national average (12.4%)
Uninsured: 3.7%
Broadband Access
98.3%
8.6 above the national average (89.7%)
Median Home Value
$867,000
Median rent: $2,422 · 77% owner-occupied
Unemployment Rate
5.1%
Labor force participation: 59.1%
Demographics
Race & Ethnicity
Age Distribution
Commute to Work
Diamond Bar, CA Frequently Asked Questions
What is the population of Diamond Bar, CA?
The population of Diamond Bar, CA is 53,750 according to the 2023 American Community Survey 5-year estimates. The median age is 45.6 years.
What is the median household income in Diamond Bar?
The median household income in Diamond Bar, CA is $106,602, above the national average of $78,538. Per capita income is $55,217.
What is the poverty rate in Diamond Bar?
The poverty rate in Diamond Bar, CA is 9.1%, compared to the national average of 12.4%. About 3.7% of residents lack health insurance.
What percentage of Diamond Bar residents have a college degree?
52.7% of adults (25+) in Diamond Bar hold a bachelor's degree or higher, and 92.8% have at least a high school diploma. The national average for bachelor's degree holders is 35.0%.
What is the median home value in Diamond Bar?
The median home value in Diamond Bar, CA is $867,000. Median rent is $2,422 per month, with 77% of housing units owner-occupied.
What is the racial makeup of Diamond Bar?
Diamond Bar's population is 17.4% White, 3.0% Black, 17.0% Hispanic or Latino, and 62.1% Asian (source: 2023 ACS).