Prosečne GPS koordinate za poštanski broj 630-511: 35.255, 128.593
Spisak gradova:
>> Guam 1(il)-dong/구암1동 630-511, Gyeongsangnam-do/경남, Masan-si/마산시, GPS koordinate: 35.25466,128.5926
Spisak gradova:
>> Guam 1(il)-dong/구암1동 630-511, Gyeongsangnam-do/경남, Masan-si/마산시, GPS koordinate: 35.25466,128.5926