Average GPS coordinates for American River Postcode location: -35.783, 137.767. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). American River on map:

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Listing cities & postcodes (1):
>> South Australia, 5221 American River, SA SUBS NEAR 2, GPS coordinates: -35.7833,137.7667