Sunnyvale, CA

ZIP code 94090 is a post-office-box ZIP code associated with South San Francisco, California, rather than a defined residential or commercial district. It therefore has no reliably delineated area in which to locate landmarks. Nearby South San Francisco attractions include Sign Hill, Oyster Point Marina, and the South San Francisco Conference Center, but they should not be described as being within 94090 without confirming a specific address.