Coordonatele medii GPS cod poștal 356-815: 36.65, 126.539

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Orașe pe listă:
>> Gobuk-myeon/고북면 356-815, Chungcheongnam-do/충남, Seosan-si/서산시, Jangyori/신송리, coordonatele GPS: 36.64976,126.53921
>> Gobuk-myeon/고북면 356-815, Chungcheongnam-do/충남, Seosan-si/서산시, Sinsongri/양천리, coordonatele GPS: 36.64972,126.53917
>> Gobuk-myeon/고북면 356-815, Chungcheongnam-do/충남, Seosan-si/서산시, Yangcheonri/장요리, coordonatele GPS: 36.64972,126.53917