Average GPS coordinates for Oku Postcode location: 34.983, 134.706. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Oku on map:

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Listing cities & postcodes (3):
>> Hyougoken, 669-3144 Oku, Hikamigunsannanchou, GPS coordinates: 35.0829,135.0069
>> Hyougoken, 678-1219 Oku, Akougunkamigoorichou, GPS coordinates: 34.8747,134.3652
>> Hyougoken, 679-2325 Oku, Kanzakigun'Ichikawachou, GPS coordinates: 34.9912,134.7469