Average GPS coordinates for Iwasawa Postcode location: 37.564, 138.927. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Iwasawa on map:

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Listing cities & postcodes (3):
>> Niigataken, 949-3564 Iwasawa, Nakakubikigunyoshikawamachi, GPS coordinates: 37.1918,138.4509
>> Niigataken, 949-8724 Iwasawa, Odiyashi, GPS coordinates: 37.2352,138.7989
>> Niigataken, 958-0251 Iwasawa, Iwafunegun'Asahimura, GPS coordinates: 38.2661,139.532