Gjennomsnittlig GPS-koordinater for postnummer 306-0604: 36.063, 139.926
Notering byer:
>> Koudashinden 306-0604, Ibarakiken, Iwaishi, GPS-koordinater: 36.0632,139.926
Notering byer:
>> Koudashinden 306-0604, Ibarakiken, Iwaishi, GPS-koordinater: 36.0632,139.926