Prosečne GPS koordinate za poštanski broj 57231: 57.265, 16.448
Spisak gradova:
>> Oskarshamn 57231, Kalmar, Oskarshamn, GPS koordinate: 57.2646,16.4484
Spisak gradova:
>> Oskarshamn 57231, Kalmar, Oskarshamn, GPS koordinate: 57.2646,16.4484