ZIP Code 94974 — San Quentin, California
📍 ZIP code 94974 is in San Quentin, Marin County, California.
ZIP code 94974 is a PO Box ZIP code assigned by the U.S. Postal Service in San Quentin, Marin County, California. It serves post office boxes at a San Quentin 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 94974 is handled in the Pacific Time Zone and the local area code is 415. The demographic profile of the surrounding community is on the standard delivery ZIP pages for San Quentin listed below.
ZIP Code 94974 Map
Coordinates: 38.0680°N, 122.7410°W
Why there are no demographics for 94974
The Census Bureau publishes demographics for ZIP Code Tabulation Areas (ZCTAs), which are built from populated census blocks. A PO Box ZIP like 94974 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: Marin County and the rest of California have hundreds of PO Box and unique ZIPs of this kind.
How ZIPs and ZCTAs differ is explained on the methodology page.
Nearby Zip Codes
Cities & Places Served
ZIP code 94974 primarily serves San Quentin in Marin County, California.