Prosečne GPS koordinate za poštanski broj 535-921: 34.64, 126.187

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Spisak gradova:
>> Jangsan-myeon/장산면 535-921, Jeollanam-do/전남, Sinan-gun/신안군, Gongsuri/공수리, GPS koordinate: 34.63955,126.18714
>> Jangsan-myeon/장산면 535-921, Jeollanam-do/전남, Sinan-gun/신안군, Paengjinri/팽진리, GPS koordinate: 34.63956,126.18715