Post Offices in Rock Island, Illinois, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Downtown Rock Island Post Office No Reviews Favorite Fax: (309) 793-5161Phone: (309) 793-5159Retail Hours Rock Island Post Office No Reviews Favorite Fax: (309) 788-2131Phone: (309) 788-2142Retail Hours