Prosečne GPS koordinate za poštanski broj 637-920: 35.296, 128.537
Spisak gradova:
>> Chirwon-myeon/칠원면 637-920, Gyeongsangnam-do/경남, Haman-gun/함안군, GPS koordinate: 35.29645,128.53748
Spisak gradova:
>> Chirwon-myeon/칠원면 637-920, Gyeongsangnam-do/경남, Haman-gun/함안군, GPS koordinate: 35.29645,128.53748