Fullerton, CA

ZIP code 92838 is a U.S. Postal Service PO Box ZIP code associated with Fullerton, California, rather than a conventional residential area with clearly defined boundaries. It therefore has no reliably assigned set of physical landmarks. Recognizable Fullerton sites, including Fullerton College, the Fullerton Museum Center, and Hillcrest Park, are in nearby geographic ZIP codes, not necessarily within 92838 itself.