Prosečne GPS koordinate za poštanski broj 121-841: 37.556, 126.915

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Spisak gradova:
>> Seogyo-dong/서교동 121-841, Seoul/서울, Mapo-gu/마포구, 445-457/445-457, GPS koordinate: 37.5555,126.91449
>> Seogyo-dong/서교동 121-841, Seoul/서울, Mapo-gu/마포구, 487-500/487-500, GPS koordinate: 37.55553,126.91452