Prosečne GPS koordinate za poštanski broj 306-0631: 36.051, 139.887
Spisak gradova:
>> Iwai 306-0631, Ibarakiken, Iwaishi, GPS koordinate: 36.0508,139.8865
Spisak gradova:
>> Iwai 306-0631, Ibarakiken, Iwaishi, GPS koordinate: 36.0508,139.8865