Average GPS coordinates for Onnadou Postcode location: 37.849, 139.301. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Onnadou on map:

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Listing cities & postcodes (1):
>> Niigataken, 959-1914 Onnadou, Kitakanbaragunsasakamimura, GPS coordinates: 37.8486,139.3008