Post Offices in Pico Rivera, California, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Crossroads Plaza Post Office No Reviews Favorite Phone: (562) 948-1217Retail Hours Pico Rivera Post Office No Reviews Favorite Fax: (562) 942-2918Phone: (562) 942-0168Retail Hours Slauson Post Office No Reviews Favorite Phone: (562) 949-0493Retail Hours