Average GPS coordinates for Yokosuka Postcode location: 35.873, 140.156. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Yokosuka on map:

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Listing cities & postcodes (1):
>> Ibarakiken, 300-1604 Yokosuka, Kitasoumaguntonemachi, GPS coordinates: 35.8729,140.156