Average GPS coordinates for Shinjuku Postcode location: 35.328, 139.968. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Shinjuku on map:

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Listing cities & postcodes (3):
>> Chibaken, 260-0021 Shinjuku, Chibashichuuouku, GPS coordinates: 35.606,140.1146
>> Chibaken, 292-0066 Shinjuku, Kisaradushi, GPS coordinates: 35.3871,139.9214
>> Chibaken, 294-0046 Shinjuku, Tateyamashi, GPS coordinates: 34.9897,139.8673