South Korea switched to a road-name address system in 2014 and a five-digit postcode in 2015, retiring the old lot-based addresses. Using a legacy jibun address or an old six-digit code is the usual cause of confusion. Here is the format, a real example, and the errors to catch.
For international shipping, a Korean address is romanized smallest-to-largest: recipient, road name and building number, district, city and postcode, then the country.
Kim Min-jun romanized recipient name12 Sejong-daero building number, then the road name (<code>-daero</code>, <code>-ro</code>, <code>-gil</code>)Jung-gu the gu (district) within the citySeoul 04524 city or province, then the 5-digit postcodeSOUTH KOREA required for inbound international shipmentsKorea Post uses a five-digit postcode tied to the road-name address system. Seoul and other central areas keep leading zeros that forms sometimes drop.
The country-specific rules that generic autocomplete and single-line address fields tend to get wrong.
Since 2014 Korea uses road names and building numbers (12 Sejong-daero) instead of the old lot-based jibun addresses. Legacy jibun addresses still circulate but should be converted to the road-name form.
The postcode is five digits (04524), replacing the old six-digit system. An old six-digit code should be updated, and Seoul's leading zeros preserved.
Korean addresses run largest-to-smallest domestically. Romanized for international carriers they flip to recipient first, so keep one consistent order per label.
Suffixes carry meaning: -gu (district), -si (city), -do (province), -ro and -gil (roads). They should be kept, not dropped.
Each of these passes a basic "is this field filled in" check but fails at the carrier, turning into a redelivery, a return, or an address correction fee.
04524 lose meaning without the zero.How the major carriers handle South Korea addresses, and what your label needs to satisfy each one.
The national postal operator and inbound last-mile partner. It uses the five-digit postcode and the road-name address, so provide the modern form.
The dominant domestic parcel carriers for Korean ecommerce. They rely on the road name, building number, and district for accurate delivery.
International carriers for inbound shipments. They require a romanized address with the country line and charge for corrections on incomplete addresses.
Address Guard checks South Korea addresses against carrier and postal databases before the order ships, normalizes the format, and flags the errors that cause failed deliveries. 240+ countries, $0.05 per check.
Part of the Address Guard international address format guide, covering 240+ countries.