Prosečne GPS koordinate za poštanski broj 306-0602: 36.074, 139.926
Spisak gradova:
>> Heihachishinden 306-0602, Ibarakiken, Iwaishi, GPS koordinate: 36.0743,139.9256
Spisak gradova:
>> Heihachishinden 306-0602, Ibarakiken, Iwaishi, GPS koordinate: 36.0743,139.9256