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  4. Postal Code 28688

South Korea Postal Code 28688 Boundary Map

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Postal Code28688
Postal Code NameCheongju-si
ProvinceChungcheongbuk-do
CountyCheongju-si
TimezoneKorean Standard Time (KST)
Adjacent Postal Codes28626
28640
28685
28686
28687
28696
28697

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