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  4. Postal Code 28400

South Korea Postal Code 28400 Boundary Map

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Postal Code28400
Postal Code NameCheongju-si
ProvinceChungcheongbuk-do
CountyCheongju-si
TimezoneKorean Standard Time (KST)
Adjacent Postal Codes28392
28393
28398
28399
28401
28402
28599
28605
28606

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