Average GPS coordinates for postcode 356-830: 36.787, 126.588
Listing cities:
>> Unsan-myeon/운산면 356-830, Chungcheongnam-do/충남, Seosan-si/서산시, GPS coordinates: 36.78689,126.58772
Listing cities:
>> Unsan-myeon/운산면 356-830, Chungcheongnam-do/충남, Seosan-si/서산시, GPS coordinates: 36.78689,126.58772