Diamond Bar zipcode
| City | Diamond Bar |
| ZIP Code | 91765 |
| Type | Standard |
| State Code | CA |
| State | California |
ZIP code of Diamond Bar is 91765. This place is located in California state in US. To send any postal service to Diamond Bar, you must use 91765 zipcode.
The ZIP code 91765 is also used with 1 more city name of California.
- Pomona, CA