Prosečne GPS koordinate za poštanski broj 306-0633: 36.026, 139.906
Spisak gradova:
>> Shimoizushima 306-0633, Ibarakiken, Iwaishi, GPS koordinate: 36.0258,139.9058
Spisak gradova:
>> Shimoizushima 306-0633, Ibarakiken, Iwaishi, GPS koordinate: 36.0258,139.9058