Keskimääräinen GPS-koordinaatit postinumero 417-821: 37.708, 126.496

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Listatut kaupungit:
>> Seonwon-myeon/선원면 417-821, Incheon/인천, Ganghwa-gun/강화군, Geumwolli/금월리, GPS-koordinaatit: 37.70816,126.49599
>> Seonwon-myeon/선원면 417-821, Incheon/인천, Ganghwa-gun/강화군, Jisanri/냉정리, GPS-koordinaatit: 37.70804,126.49587
>> Seonwon-myeon/선원면 417-821, Incheon/인천, Ganghwa-gun/강화군, Naengjeongri/연리, GPS-koordinaatit: 37.70816,126.49599
>> Seonwon-myeon/선원면 417-821, Incheon/인천, Ganghwa-gun/강화군, Yeonri/지산리, GPS-koordinaatit: 37.70804,126.49587