Keskimääräinen GPS-koordinaatit postinumero 356-821: 36.736, 126.561

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Listatut kaupungit:
>> Haemi-myeon/해미면 356-821, Chungcheongnam-do/충남, Seosan-si/서산시, Dongamri/관유리, GPS-koordinaatit: 36.7357,126.56075
>> Haemi-myeon/해미면 356-821, Chungcheongnam-do/충남, Seosan-si/서산시, Gwanyuri/동암리, GPS-koordinaatit: 36.73572,126.56077
>> Haemi-myeon/해미면 356-821, Chungcheongnam-do/충남, Seosan-si/서산시, Hongcheonri/삼송리, GPS-koordinaatit: 36.73568,126.56073
>> Haemi-myeon/해미면 356-821, Chungcheongnam-do/충남, Seosan-si/서산시, Ohakri/오학리, GPS-koordinaatit: 36.73579,126.56084
>> Haemi-myeon/해미면 356-821, Chungcheongnam-do/충남, Seosan-si/서산시, Samsongri/홍천리, GPS-koordinaatit: 36.7358,126.56085