Average GPS coordinates for Sunaoka Postcode location: 37.865, 139.123. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Sunaoka on map:

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Listing cities & postcodes (1):
>> Niigataken, 950-0132 Sunaoka, Nakakanbaragunkamedamachi, GPS coordinates: 37.8648,139.123