Prosečne GPS koordinate za poštanski broj 406-600: 37.409, 126.678
Spisak gradova:
>> Incheonucheguksaseoham/인천우체국사서함 406-600, Incheon/인천, Yeonsu-gu/연수구, GPS koordinate: 37.4094,126.6783
Spisak gradova:
>> Incheonucheguksaseoham/인천우체국사서함 406-600, Incheon/인천, Yeonsu-gu/연수구, GPS koordinate: 37.4094,126.6783