Diamond Bar, CA ZIP code
The ZIP code for Diamond Bar, California is 91765. It is in Los Angeles County.
- Population in these ZIPs
- 44,502
- Avg. median income
- $105,600population-weighted
- Typical home value
- $1,010,800population-weighted
- Metro area
- Los Angeles-Long Beach-Anaheim, CA
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Diamond Bar, CA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 91765 | 44,502 | $105,565 | $1,010,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Diamond Bar
- Walnut 4 mi
- Brea 5 mi
- Rowland Heights 5 mi
- Chino Hills 6 mi
- Pomona 6 mi
- Yorba Linda 7 mi
- Placentia 8 mi
- West Covina 8 mi
- Covina 8 mi
- San Dimas 8 mi
- Chino 9 mi
- La Puente 9 mi
Frequently asked questions
What is the ZIP code for Diamond Bar, CA?
The ZIP code for Diamond Bar, CA is 91765.
What county is Diamond Bar, California in?
Diamond Bar ZIP codes are in Los Angeles County.