KR Republic Of Korea Major Cities Postal Codes

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📮 Republic Of Korea Postal Code FAQ & Postal Regulations

❓ Common FAQ

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How many digits is a South Korean postal code?
South Korean postal codes are 5-digit numbers (e.g., 06164), fully implemented since 2015.
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What do the first two digits represent?
They indicate the province/metropolitan city (e.g., 01-08 for Seoul, 48-49 for Busan).
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How to find a Korean postal code?
Use the "우편번호 검색" (postal code search) on Korea Post's official website (www.epost.go.kr) by entering the Korean address.
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Is the postal code mandatory for international mail?
Yes! Correct codes speed up processing. Always include "KOREA/REP. OF KOREA" on international mail.
What if I write a wrong postal code?
Delivery may be delayed by 3-5 days as mail is manually sorted. Incomplete addresses may cause return or loss.

📋 Republic Of Korea Postal Regulations & Tips

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Address Format Rules
Order: Postal code → Province/City → District → Street → Building number → Unit. Write addresses in Korean; English is supplementary (e.g., 152 Teheran-ro, Gangnam-gu, Seoul, 3F).
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Parcel Size Limits
Max: Length+width+height ≤ 2m, single side ≤1.5m; Min: At least 14×9 cm. Oversized items incur extra fees.
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Prohibited Items
Banned: Cash, flammables, weapons, drugs. Lithium batteries require declaration; liquids/powders must be sealed and labeled.
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Delivery Time
Domestic: 1-2 business days; International EMS: 3-7 days (e.g., China→Korea). Delays may occur during holidays (Lunar New Year/Chuseok).
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Mail Tracking
Keep the 13-digit tracking number (format: RR123456789KR) provided by the post office. Track status via Korea Post's website.