Prosečne GPS koordinate za poštanski broj 350-0257: 35.965, 139.358
Spisak gradova:
>> Koyama 350-0257, Saitamaken, Sakadoshi, GPS koordinate: 35.9649,139.3584
Spisak gradova:
>> Koyama 350-0257, Saitamaken, Sakadoshi, GPS koordinate: 35.9649,139.3584