| ZIP Code | 91765 |
|---|---|
| City | Diamond Bar |
| State | California (CA) |
| County | Los Angeles County |
| Area Code | 840/909 |
| Elevation | 995 ft |
| Latitude | 33.985166 |
|---|---|
| Longitude | -117.812005 |
| Timezone | Los Angeles (DST) |
| FIPS | 06037 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 45.7 yrs ↑ 7% since 2019 |
|---|---|
| Avg Household Size | 2.89 |
| Below Poverty | 10.1% ≈ Avg |
| College Grads | 62.8% ▲ 62% above avg |
| Unemployment | 5.3% ▲ 8% above avg |
| No HS Diploma | 946 (3%) |
| HS Graduate | 4,610 (14.5%) |
| Some College | 2,407 (7.6%) |
| Associates | 3,822 (12.1%) |
| Bachelors | 2,945 (9.3%) |
| Graduate Degree | 16,973 (53.5%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $104,737 ▲ 37% above avg ↑ 4% since 2019 |
|---|---|
| Median Home Value | $878,900 ▲ 215% above avg ↑ 31% since 2019 |
| Home/Income Ratio | 8.4x (nat avg ~3.5x) |
| Median Rent | $2,395/mo ↑ 19% since 2019 |
| Total Units | 16,056 |
| Vacant Units | 636 |
| Avg HH Size | 2.89 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 16,056 |
|---|---|
| Vacant | 636 |
| Owner Occupied | 77.2% |
| Renter Occupied | 22.8% |
| Avg HH Size | 2.89 |
ZIP code 91765 is located in Diamond Bar, California, within Los Angeles County. With a population of 44,779, this is a highly populated ZIP code with a mature community — the median age is 45.7 years. Economically, 91765 is a upper-middle-income ZIP code: the median household income of $104,737 is above the national average.
Real estate in ZIP code 91765 represents among the most expensive housing markets in the country. The median home value of $878,900 is more than double the national average. Renters can expect to pay around $2,395 per month in median rent. Homeownership is strong here — 77.2% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 31% since 2019.
The population of 91765 is majority Asian (60.42%). Residents are highly educated — 62.8% hold a bachelor's degree or higher, which is significantly above the national average. Poverty affects some residents at 10.1%. Household income has grown by 4% since 2019.
The unemployment rate in 91765 stands at 5.3%, which is near the national average. About 16% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 73%.
Overall, ZIP code 91765 in Diamond Bar, CA is characterized as upper-middle-income, highly educated, a mature community, and predominantly owner-occupied. With 44,779 residents, a median household income of $104,737, and a median home value of $878,900, it offers a clear picture of life in this part of California.