Coordonatele medii GPS cod poștal 356-851: 36.834, 126.442

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Orașe pe listă:
>> Seongyeon-myeon/성연면 356-851, Chungcheongnam-do/충남, Seosan-si/서산시, Galhyeonri/갈현리, coordonatele GPS: 36.83407,126.4418
>> Seongyeon-myeon/성연면 356-851, Chungcheongnam-do/충남, Seosan-si/서산시, Osari/오사리, coordonatele GPS: 36.8341,126.44183
>> Seongyeon-myeon/성연면 356-851, Chungcheongnam-do/충남, Seosan-si/서산시, Pyeongri/왕정리, coordonatele GPS: 36.83415,126.44188
>> Seongyeon-myeon/성연면 356-851, Chungcheongnam-do/충남, Seosan-si/서산시, Wangjeongri/평리, coordonatele GPS: 36.83413,126.44186