Average GPS coordinates for Kokubu Postcode location: 33.197, 131.556. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Kokubu on map:

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Listing cities & postcodes (1):
>> Ooitaken, 870-0864 Kokubu, Ooitashi, GPS coordinates: 33.1973,131.5557