Diamond Bar California is covered by a total of 1 ZIP Codes. There are also 2 ZIP Codes that overlap Diamond Bar but have a different postal city name. The ZIP Codes in Diamond Bar range from 91748 to 91789. Of the ZIP codes within or partially within Diamond Bar there are 1 Standard ZIP Codes. The total population of ZIP Codes in Diamond Bar is 45303.
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| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Rowland Heights | Standard | |||
| Diamond Bar | Standard | |||
| Walnut | Standard |