Prosečne GPS koordinate za poštanski broj 306-0042: 36.165, 139.706
Spisak gradova:
>> Sanwa 306-0042, Ibarakiken, Kogashi, GPS koordinate: 36.1653,139.7057
Spisak gradova:
>> Sanwa 306-0042, Ibarakiken, Kogashi, GPS koordinate: 36.1653,139.7057