Sunnyvale, CA

ZIP code 94091 is associated with Sunnyvale, California, but is a PO Box designation rather than a standard residential ZIP with a clearly defined land area. Consequently, no physical landmarks can be confidently said to lie within its boundaries. Notable Sunnyvale landmarks in the surrounding city include the Sunnyvale Heritage Park Museum, the historic Murphy Avenue district, and Baylands Park; whether a specific address uses 94091 depends on its postal designation.