Průměrné GPS souřadnice pro psČ 417-851: 37.692, 126.426

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Seznam měst:
>> Yangdo-myeon/양도면 417-851, Incheon/인천, Ganghwa-gun/강화군, Geonpyeongri/건평리, GPS souřadnice: 37.69153,126.42554
>> Yangdo-myeon/양도면 417-851, Incheon/인천, Ganghwa-gun/강화군, Insanri/삼흥리, GPS souřadnice: 37.69163,126.42564
>> Yangdo-myeon/양도면 417-851, Incheon/인천, Ganghwa-gun/강화군, Samheungri/인산리, GPS souřadnice: 37.69156,126.42557