Average GPS coordinates for South River Postcode location: 40.437, -74.399. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). South River on map:

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Listing cities & postcodes (2):
>> New Jersey, 08877 South River, Middlesex, GPS coordinates: 40.43,-74.4173
>> New Jersey, 08882 South River, Middlesex, GPS coordinates: 40.4444,-74.3801