Prosečne GPS koordinate za poštanski broj 301-0003: 35.923, 140.166
Spisak gradova:
>> Hiradai 301-0003, Ibarakiken, Ryuugasakishi, GPS koordinate: 35.9233,140.1657
Spisak gradova:
>> Hiradai 301-0003, Ibarakiken, Ryuugasakishi, GPS koordinate: 35.9233,140.1657