Average GPS coordinates for Barnard Postcode location: 45.721, -98.553. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Barnard on map:

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Listing cities & postcodes (1):
>> South Dakota, 57426 Barnard, Brown, GPS coordinates: 45.7205,-98.5534