Oakland, CA Zip Codes Alameda County Zip Code Boundary Map 94545 Zip Code (Hayward, California) Profile homes, apartments Amazon.com: ZIP Code Wall Map of Hayward, CA ZIP Code Map Hayward, CA Zip Code Map Premium Style Zip 94544 (Hayward, CA) Comments Amazon.com: Hayward, CA ZIP Code Map Laminated: Home & Kitchen Best Places to Live in Hayward, California Hayward California Zip Code Wall Map (Basic Style) by MarketMAPS CBIC Round 2 Recompete Competitive Bidding Area San