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  4. Postal Code 31230

South Korea Postal Code 31230 Boundary Map

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Postal Code31230
Postal Code NameCheonan-si
ProvinceChungcheongnam-do
CountyCheonan-si
TimezoneKorean Standard Time (KST)
Adjacent Postal Codes31229
31231
31232
31234
31236
31242
31243
31246

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