Average GPS coordinates for Marvin Postcode location: 45.273, -96.91. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Marvin on map:

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Listing cities & postcodes (1):
>> South Dakota, 57251 Marvin, Grant, GPS coordinates: 45.2727,-96.91