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  4. Postal Code 28422

South Korea Postal Code 28422 Boundary Map

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Postal Code28422
Postal Code NameCheongju-si
ProvinceChungcheongbuk-do
CountyCheongju-si
TimezoneKorean Standard Time (KST)
Adjacent Postal Codes28389
28390
28391
28420
28421
28423

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