Post Offices in Summerville, South Carolina, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Oakbrook Post Office No Reviews Favorite Fax: (843) 821-8293Phone: (803) 926-6354Retail Hours Summerville Post Office No Reviews Favorite Fax: (843) 821-0911Phone: (803) 926-6354Retail Hours