Average GPS coordinates for Ootsuki Postcode location: 37.623, 138.962. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Ootsuki on map:

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Listing cities & postcodes (3):
>> Niigataken, 943-0606 Ootsuki, Higashikubikigunmakimura, GPS coordinates: 37.0983,138.396
>> Niigataken, 950-0162 Ootsuki, Nakakanbaragunkamedamachi, GPS coordinates: 37.8825,139.1012
>> Niigataken, 957-0465 Ootsuki, Shibatashi, GPS coordinates: 37.889,139.3889