Prosečne GPS koordinate za poštanski broj 321-0521: 36.664, 140.1
Spisak gradova:
>> Iwako 321-0521, Tochigiken, Nasugunminaminasumachi, GPS koordinate: 36.6636,140.1003
Spisak gradova:
>> Iwako 321-0521, Tochigiken, Nasugunminaminasumachi, GPS koordinate: 36.6636,140.1003