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  4. Postal Code 31100

South Korea Postal Code 31100 Boundary Map

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Postal Code31100
Postal Code NameCheonan-si
ProvinceChungcheongnam-do
CountyCheonan-si
TimezoneKorean Standard Time (KST)
Adjacent Postal Codes31079
31089
31090
31101
31106
31107

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