Average GPS coordinates for Yamada Postcode location: 34.76, 133.73. (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 (3):
>> Okayamaken, 701-0202 Yamada, Okayamashi, GPS coordinates: 34.6249,133.8559
>> Okayamaken, 710-1202 Yamada, Soujashi, GPS coordinates: 34.6766,133.6625
>> Okayamaken, 716-1402 Yamada, Joubougunhokubouchou, GPS coordinates: 34.9788,133.6702