Prosečne GPS koordinate za poštanski broj 309-1607: 36.425, 140.258
Spisak gradova:
>> Ishidera 309-1607, Ibarakiken, Kasamashi, GPS koordinate: 36.4254,140.2576
Spisak gradova:
>> Ishidera 309-1607, Ibarakiken, Kasamashi, GPS koordinate: 36.4254,140.2576