ZIP Code 95430 — Duncans Mills, California
📍 ZIP code 95430 is in Duncans Mills, Sonoma County, California.
ZIP code 95430 is a PO Box ZIP code assigned by the U.S. Postal Service in Duncans Mills, Sonoma County, California. It serves post office boxes at a Duncans Mills 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 95430 is handled in the Pacific Time Zone and the local area code is 707. The demographic profile of the surrounding community is on the standard delivery ZIP pages for Duncans Mills listed below.
ZIP Code 95430 Map
Coordinates: 38.4614°N, 123.0472°W
Why there are no demographics for 95430
The Census Bureau publishes demographics for ZIP Code Tabulation Areas (ZCTAs), which are built from populated census blocks. A PO Box ZIP like 95430 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: Sonoma 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 95430 primarily serves Duncans Mills in Sonoma County, California.