Keskimääräinen GPS-koordinaatit postinumero 417-853: 37.657, 126.431

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Listatut kaupungit:
>> Yangdo-myeon/양도면 417-853, Incheon/인천, Ganghwa-gun/강화군, Hailli/능내리, GPS-koordinaatit: 37.65723,126.43099
>> Yangdo-myeon/양도면 417-853, Incheon/인천, Ganghwa-gun/강화군, Josanri/조산리, GPS-koordinaatit: 37.65729,126.43105
>> Yangdo-myeon/양도면 417-853, Incheon/인천, Ganghwa-gun/강화군, Neungnaeri/하일리, GPS-koordinaatit: 37.65725,126.43101