Average GPS coordinates for Glenham Postcode location: 45.534, -100.272. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Glenham on map:

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Listing cities & postcodes (1):
>> South Dakota, 57631 Glenham, Walworth, GPS coordinates: 45.5335,-100.2716