Prosečne GPS koordinate za poštanski broj 306-0304: 36.088, 139.758
Spisak gradova:
>> Koushu 306-0304, Ibarakiken, Sashimagungokamachi, GPS koordinate: 36.0878,139.758
Spisak gradova:
>> Koushu 306-0304, Ibarakiken, Sashimagungokamachi, GPS koordinate: 36.0878,139.758