Average GPS coordinates for Souma Postcode location: 38.007, 139.37. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Souma on map:

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Listing cities & postcodes (1):
>> Niigataken, 959-2465 Souma, Kitakanbaragunkajikawamura, GPS coordinates: 38.0066,139.37