Average GPS coordinates for postcode 356-850: 36.839, 126.469
Listing cities:
>> Seongyeon-myeon/성연면 356-850, Chungcheongnam-do/충남, Seosan-si/서산시, GPS coordinates: 36.83852,126.46885
Listing cities:
>> Seongyeon-myeon/성연면 356-850, Chungcheongnam-do/충남, Seosan-si/서산시, GPS coordinates: 36.83852,126.46885