Prosečne GPS koordinate za poštanski broj 405-728: 37.394, 126.701
Spisak gradova:
>> Gojan-dong/고잔동 405-728, Incheon/인천, Namdong-gu/남동구, Anam/아남, GPS koordinate: 37.39373,126.70114
Spisak gradova:
>> Gojan-dong/고잔동 405-728, Incheon/인천, Namdong-gu/남동구, Anam/아남, GPS koordinate: 37.39373,126.70114