Average GPS coordinates for Higashioonuma Postcode location: 35.936, 140.359. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Higashioonuma on map:

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Listing cities & postcodes (1):
>> Ibarakiken, 300-0616 Higashioonuma, Inashikigun'Azumamachi, GPS coordinates: 35.9363,140.359