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  4. Postal Code 31203

South Korea Postal Code 31203 Boundary Map

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Postal Code31203
Postal Code NameCheonan-si
ProvinceChungcheongnam-do
CountyCheonan-si
TimezoneKorean Standard Time (KST)
Adjacent Postal Codes31177
31178
31185
31201
31202
31204
31206
31209

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