Prosečne GPS koordinate za poštanski broj 407-821: 34.79, 126.7
Spisak gradova:
>> Jakjeonseoun-dong/작전서운동 407-821, Incheon/인천, Gyeyang-gu/계양구, 600-740/600-740, GPS koordinate: 34.79014,126.69964
Spisak gradova:
>> Jakjeonseoun-dong/작전서운동 407-821, Incheon/인천, Gyeyang-gu/계양구, 600-740/600-740, GPS koordinate: 34.79014,126.69964