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  4. Postal Code 28457

South Korea Postal Code 28457 Boundary Map

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Postal Code28457
Postal Code NameCheongju-si
ProvinceChungcheongbuk-do
CountyCheongju-si
TimezoneKorean Standard Time (KST)
Adjacent Postal Codes28454
28455
28456
28458
28459

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