ZIP Codes in Downey, CA
Downey uses 3 ZIP codes, all in Los Angeles County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 3 Downey ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 90240 | standard | Los Angeles | 24,853 |
| 90241 | standard | Los Angeles | 45,319 |
| 90242 | standard | Los Angeles | 40,767 |
Finding a ZIP+4 in Downey
Knowing which of these 3 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Downey street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
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