Prosečne GPS koordinate za poštanski broj 417-803: 37.761, 126.491

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Spisak gradova:
>> Ganghwa-eup/강화읍 417-803, Incheon/인천, Ganghwa-gun/강화군, Gwancheong ri 4/관청4리, GPS koordinate: 37.76082,126.49047
>> Ganghwa-eup/강화읍 417-803, Incheon/인천, Ganghwa-gun/강화군, Gwancheong ri 5/관청5리, GPS koordinate: 37.76087,126.49052
>> Ganghwa-eup/강화읍 417-803, Incheon/인천, Ganghwa-gun/강화군, Gwancheong ri 6/관청6리, GPS koordinate: 37.76093,126.49058
>> Ganghwa-eup/강화읍 417-803, Incheon/인천, Ganghwa-gun/강화군, Gwancheong ri 7/관청7리, GPS koordinate: 37.76082,126.49047