Prosečne GPS koordinate za poštanski broj 121-850: 37.568, 126.906

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Spisak gradova:
>> Seongsan 2(i)-dong/성산2동 121-850, Seoul/서울, Mapo-gu/마포구, 341-450/341-450, GPS koordinate: 37.56766,126.9057
>> Seongsan 2(i)-dong/성산2동 121-850, Seoul/서울, Mapo-gu/마포구, 561-571/561-571, GPS koordinate: 37.56771,126.90575
>> Seongsan 2(i)-dong/성산2동 121-850, Seoul/서울, Mapo-gu/마포구, 573-585/573-585, GPS koordinate: 37.56766,126.9057
>> Seongsan 2(i)-dong/성산2동 121-850, Seoul/서울, Mapo-gu/마포구, 589-595/589-595, GPS koordinate: 37.56773,126.90577
>> Seongsan 2(i)-dong/성산2동 121-850, Seoul/서울, Mapo-gu/마포구, 597-600/597-600, GPS koordinate: 37.56771,126.90575