Gjennomsnittlig GPS-koordinater for postnummer 306-0421: 36.098, 139.817
Notering byer:
>> Someya 306-0421, Ibarakiken, Sashimagunsakaimachi, GPS-koordinater: 36.0983,139.8169
Notering byer:
>> Someya 306-0421, Ibarakiken, Sashimagunsakaimachi, GPS-koordinater: 36.0983,139.8169