Prosečne GPS koordinate za poštanski broj 300-0818: 36.068, 140.174
Spisak gradova:
>> Amakawa 300-0818, Ibarakiken, Tsuchiurashi, GPS koordinate: 36.0679,140.1738
Spisak gradova:
>> Amakawa 300-0818, Ibarakiken, Tsuchiurashi, GPS koordinate: 36.0679,140.1738