Prosečne GPS koordinate za poštanski broj 306-0421: 36.098, 139.817
Spisak gradova:
>> Someya 306-0421, Ibarakiken, Sashimagunsakaimachi, GPS koordinate: 36.0983,139.8169
Spisak gradova:
>> Someya 306-0421, Ibarakiken, Sashimagunsakaimachi, GPS koordinate: 36.0983,139.8169