Average GPS coordinates for Oohama Postcode location: 33.434, 132.732. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Oohama on map:

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Listing cities & postcodes (3):
>> Ehimeken, 793-0016 Oohama, Saijoushi, GPS coordinates: 33.9044,133.2266
>> Ehimeken, 796-0308 Oohama, Nishiuwagun'Ikatachou, GPS coordinates: 33.4748,132.3707
>> Ehimeken, 798-4347 Oohama, Minamiuwagunjouhenchou, GPS coordinates: 32.9235,132.5991