Post Offices in Arecibo, Puerto Rico, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Arecibo Post Office No Reviews Favorite Fax: (787) 878-1665Phone: (787) 878-2775Retail Hours Arecibo Pueblo Post Office No Reviews Favorite Fax: (787) 878-1665Phone: (787) 878-8772Retail Hours Cotto Post Office No Reviews Favorite Fax: (787) 878-1665Phone: (787) 880-0094Retail Hours