ZIP Codes in Concord, CA
Concord uses 4 ZIP codes, all in Contra Costa County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 4 Concord ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 94518 | standard | Contra Costa | 27,345 |
| 94519 | standard | Contra Costa | 19,058 |
| 94520 | standard | Contra Costa | 37,381 |
| 94521 | standard | Contra Costa | 41,909 |
Finding a ZIP+4 in Concord
Knowing which of these 4 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 Concord street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Concord addresses and download it complete.