Opening hours of Post Office in American River, South Australia Opening hours of Post Office in American River, South Australia Home / South Australia / American River / Post Office Post Office Australia Post - American River 18 Buick Dr, American River SA 5221, Australia, American River, South Australia 5221 +61 8 8553 7000 Post Office Australia Post - American River LPO 1 Tangara Drive, American River, South Australia 5221 +61 8 8553 7000 Categories of local businesses in American River Automotive Cafe Campground Church Establishment Finance Fire Station Food Food & Drink General Contractor Home & Gardens Hotel Legal & Financial Lodging Park Place of Worship Post Office Real Estate Agency Travel & Accommodation Travel & Tourism Travel Agency Uncategorized