Prosečne GPS koordinate za poštanski broj 631-717: 35.206, 128.575
Spisak gradova:
>> Chang-dong/창동 631-717, Gyeongsangnam-do/경남, Masan-si/마산시, Nonghyeopmasanjibu/농협마산지부, GPS koordinate: 35.20616,128.57461
Spisak gradova:
>> Chang-dong/창동 631-717, Gyeongsangnam-do/경남, Masan-si/마산시, Nonghyeopmasanjibu/농협마산지부, GPS koordinate: 35.20616,128.57461