Average GPS coordinates for Yamaguchi Postcode location: 37.307, 138.684. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Yamaguchi on map:

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Listing cities & postcodes (8):
>> Niigataken, 940-0114 Yamaguchi, Tochioshi, GPS coordinates: 37.4438,138.8329
>> Niigataken, 943-0643 Yamaguchi, Higashikubikigunmakimura, GPS coordinates: 37.0846,138.3706
>> Niigataken, 945-1116 Yamaguchi, Kashiwazakishi, GPS coordinates: 37.2955,138.5666
>> Niigataken, 946-0115 Yamaguchi, Kitauonumagunhirokamimura, GPS coordinates: 37.2666,138.9708
>> Niigataken, 949-0554 Yamaguchi, Itoigawashi, GPS coordinates: 36.9385,137.9007
>> Niigataken, 949-3415 Yamaguchi, Nakakubikigunyoshikawamachi, GPS coordinates: 37.205,138.413
>> Niigataken, 949-7121 Yamaguchi, Minamiuonumagunmuikamachi, GPS coordinates: 37.0982,138.9714
>> Niigataken, 959-3133 Yamaguchi, Iwafunegun'Arakawamachi, GPS coordinates: 38.123,139.4437