Post Offices in Glenwood, Illinois, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Glenwood Post Office No Reviews Favorite Phone: (708) 758-5170Retail Hours Tri City Carrier Annex Post Office No Reviews Favorite Fax: (708) 754-6317Phone: (708) 754-0674Retail Hours