Prosečne GPS koordinate za poštanski broj 631-300: 35.143, 128.585
Spisak gradova:
>> Deokdong-dong/덕동동 631-300, Gyeongsangnam-do/경남, Masan-si/마산시, GPS koordinate: 35.1429,128.58482
Spisak gradova:
>> Deokdong-dong/덕동동 631-300, Gyeongsangnam-do/경남, Masan-si/마산시, GPS koordinate: 35.1429,128.58482