ZIP Code 94524 — Concord, California
📍 ZIP code 94524 is in Concord, Contra Costa County, California.
ZIP code 94524 is a PO Box ZIP code assigned by the U.S. Postal Service in Concord, Contra Costa County, California. It serves post office boxes at a Concord post office rather than street addresses, which is why the Census Bureau reports no resident population, income or housing figures for it. Mail addressed to 94524 is handled in the Pacific Time Zone and the local area code is 925. The demographic profile of the surrounding community is on the standard delivery ZIP pages for Concord listed below.
Why there are no demographics for 94524
The Census Bureau publishes demographics for ZIP Code Tabulation Areas (ZCTAs), which are built from populated census blocks. A PO Box ZIP like 94524 has no delivery territory of its own, so there is no ZCTA and no population, income, housing or education estimate to report. This is normal: Contra Costa County and the rest of California have hundreds of PO Box and unique ZIPs of this kind.
For the community around Concord, use the delivery ZIPs that do carry Census data:
How ZIPs and ZCTAs differ is explained on the methodology page.
Nearby Zip Codes
Cities & Places Served
ZIP code 94524 primarily serves Concord in Contra Costa County, California.