Average GPS coordinates for Yamada Postcode location: 37.664, 138.9. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Yamada on map:

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Listing cities & postcodes (7):
>> Niigataken, 940-0097 Yamada, Nagaokashi, GPS coordinates: 37.4459,138.8404
>> Niigataken, 940-0214 Yamada, Tochioshi, GPS coordinates: 37.4459,138.8404
>> Niigataken, 940-2526 Yamada, Santougunteradomarimachi, GPS coordinates: 37.4459,138.8404
>> Niigataken, 946-0055 Yamada, Kitauonumagunhirokamimura, GPS coordinates: 37.2495,138.9893
>> Niigataken, 950-1101 Yamada, Niigatashi, GPS coordinates: 37.871,139.0154
>> Niigataken, 952-1321 Yamada, Sadogunsawatamachi, GPS coordinates: 38.025,138.3042
>> Niigataken, 959-3425 Yamada, Iwafunegunkamihayashimura, GPS coordinates: 38.1622,139.4699