Post Offices in El Cerrito, California, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List El Cerrito Post Office No Reviews Favorite Fax: (510) 235-5981Phone: (510) 235-5643Retail Hours El Cerrito Carrier Annex Post Office No Reviews Favorite Fax: (510) 235-5981Phone: (510) 237-5746Retail Hours Fairmount Post Office No Reviews Favorite Fax: (510) 235-5981Phone: (510) 525-0327Retail Hours