What is the correct Korean address format? A Korean address written in Roman letters runs smallest-unit to largest, using the road-name system: building number + road name, then district, city, and the five-digit postal code — for example: Mr. Minjun Kim / 101-dong 304-ho / 23 Sajik-ro / Jongno-gu / Seoul 03043. Since 2015 the postal code is five digits, and since the road-name reform the old land-lot numbers are no longer the official address. If you are sending from the United States, add SOUTH KOREA as the final line so USPS and UPS route the parcel to the right country.
Key Takeaways
- Korea uses a road-name address system: a building number follows the road name (e.g. “23 Sajik-ro”), replacing the old land-lot (jibun) numbers that were retired as the official system.
- Romanized order is smallest-to-largest: recipient → building/unit → building number + road → district (-gu) → city → five-digit postal code → country line last.
- The postal code is five digits (since 1 August 2015, replacing the old six-digit code) and sits after the city name.
- Road suffixes signal street size: -daero (대로, major boulevard), -ro (로, road), and -gil (길, smaller street branching off a -ro).
- From the US, always add “SOUTH KOREA” in English capitals as the last line — USPS and UPS sort international parcels by the country line first.
What Is the Correct Korean Address Format?
Written in Korean (Hangul), an address runs largest-unit to smallest, ending with the recipient. Romanized for an international label it reverses to smallest-to-largest. Korea Post and the country’s road-name address reform give this canonical structure:
- Addressee’s name (with title where known)
- Building or apartment name, plus building (-dong) and unit (-ho) number
- Building number + road name (e.g. 23 Sajik-ro)
- Neighbourhood (-dong/-eup/-myeon) where used
- District (-gu), then city or county
- City / province with the five-digit postal code
A US shipper preparing a label through a platform like ParcelPath’s South Korea shipping page uses that same romanized order, with one addition covered below: the destination country on the final line.
What Are the Essential Components of a Korean Address?
Each line maps to a level of Korea’s administrative hierarchy. Since the road-name reform, the building-number-plus-road line is the core of the address — the same role a street line plays in the US.
| Line | What it is | Example | Required? |
|---|---|---|---|
| Recipient | Person or business receiving the item | Mr. Minjun Kim | Yes |
| Building / unit | Apartment name, building (-dong) and unit (-ho) | 101-dong 304-ho | Only if needed |
| Road + number | Building number following the road name | 23 Sajik-ro | Yes |
| District | City ward (-gu) or county (-gun) | Jongno-gu | Yes (in cities) |
| City / province | Metropolitan city or province (-do) | Seoul | Yes |
| Postal code | Five digits (since 2015) | 03043 | Yes |
| Country | Destination country for international mail | SOUTH KOREA | Yes (from abroad) |
The surprise for people used to US addressing is that the building number comes after the road name, not before — “23 Sajik-ro” means building 23 on Sajik-ro. Korea’s national portal notes there is no single official Latin-alphabet convention, so mail carriers are trained to read several romanized orders; including the postal code removes most of the ambiguity.
How Does the Korean Address System Work?
Korea switched from a centuries-old land-lot (jibun) system to a road-name address system. The old lot numbers were officially retired as the primary address, so a modern Korean address is built around a named road and a building number on that road. The road suffix tells you the street’s size:
- -daero (대로) — a major boulevard, typically eight lanes or wider.
- -ro (로) — a road, roughly two to seven lanes.
- -gil (길) — a smaller street, usually branching off a -ro.
The postal code moved to a five-digit format on 1 August 2015, replacing the earlier six-digit code, and it sits after the city name. Above the road line, an apartment complex adds a building number in the -dong form and a unit in the -ho form — so “101-dong 304-ho” is building 101, unit 304. Korea’s administrative units nest as province (-do) → city (-si) or county (-gun) → district (-gu) → neighbourhood (-dong), though the seven metropolitan cities such as Seoul and Busan stand outside the province level.
Building numbers on a Korean road are assigned in sequence along the street, with odd numbers on one side and even on the other — the same logic as US and European street numbering, and a deliberate goal of the road-name reform, which was designed to make Korean addresses legible to international carriers and navigation systems. A longer road may also carry a branch -gil whose name is derived from the main -ro it splits off from, so “Sajik-ro-8-gil” is the eighth -gil branching from Sajik-ro. When you romanize, keep those numeric segments intact; they are part of the road name, not a separate building number.
How Do You Address a Korean Parcel From the United States?
Shipping into South Korea from the US adds exactly one rule to everything above: the last line of the address must be the destination country in English capitals — SOUTH KOREA. USPS and UPS sort outbound international parcels by that country line first, before the postal code is ever read, so omitting it is the fastest way to have a package held or returned.
Practical points for US-origin Korea shipments:
- Romanize the address using the standard Revised Romanization the road-name system uses (Sajik-ro, Jongno-gu); writing it in Hangul risks being unreadable to US-side carrier systems.
- Reverse the order. Korean senders write big-to-small; a US label reads small-to-big (recipient first, city and postal code near the bottom, country last).
- Always include the five-digit postal code — because there is no single official romanization, the code is the line that resolves most ambiguity.
- Both USPS and UPS reach every Korean postal code. ParcelPath issues discounted USPS and UPS labels for the Korea lane; the South Korea destination guide covers current transit windows and customs paperwork.
For the customs side of a Korea parcel — the CN22/CN23 declaration, the personal-clearance code many recipients need, and duty/VAT thresholds — see our international shipping hub, which walks through the documentation that keeps a parcel out of a customs hold.
What Are the Most Common Korean Address Mistakes to Avoid?
Most failed or delayed Korea deliveries from abroad trace back to a short list of formatting errors:
- Using an old land-lot (jibun) number instead of the road-name address. The lot system is no longer the official address; use the building number and road name.
- Putting the building number before the road name. In Korea the number follows the road — “23 Sajik-ro,” not “Sajik-ro 23” when romanized in the standard order.
- Using an old six-digit postal code. Korea moved to five digits in 2015; a six-digit code is out of date.
- Dropping the district (-gu) in a metropolitan city, where it is essential to routing.
- Forgetting “SOUTH KOREA” on mail sent from abroad. Without the country line, a US carrier can’t route the parcel internationally — and “Korea” alone risks confusion with the North.
How Do You Handle Metropolitan Cities, Apartments and Romanization?
A few Korea-specific cases trip up international senders:
- Metropolitan cities — Seoul, Busan, Incheon, Daegu, Daejeon, Gwangju, and Ulsan sit outside the province system. Their addresses go straight from district (-gu) to the city name, with no province (-do) line.
- Apartment complexes add a building and unit line above the road line, in the -dong/-ho form (e.g. “101-dong 304-ho”). Don’t confuse this -dong (building) with the neighbourhood -dong.
- Romanization varies — there is no single official Latin spelling, so you may see “Jongno-gu” or “Jongro-gu.” Match whatever the recipient provides, and always include the postal code as the tiebreaker.
- Sejong City is a special self-governing city and is written on its own, like a metropolitan city, rather than under a province.
Frequently Asked Questions
Does the building number go before or after the road name in Korea?
After. Korea’s road-name address system places the building number following the road name, so a romanized address reads “23 Sajik-ro” — building 23 on Sajik-ro. This is the reverse of the US convention, where the house number comes first.
How many digits is a Korean postal code?
Five. South Korea switched from a six-digit to a five-digit postal code on 1 August 2015. The code sits after the city name and, because there is no single official romanization, it is the most reliable routing line on the label.
What’s the difference between -ro, -daero, and -gil?
They mark street size in the road-name system: -daero is a major boulevard (eight lanes or wider), -ro is a mid-size road (two to seven lanes), and -gil is a smaller street that usually branches off a -ro. All three appear as the road portion of an address.
Can I still use the old land-lot address?
You should not. The land-lot (jibun) numbering was officially retired as the primary address in favour of the road-name system, so modern sorting keys off the building number and road name. Use the road-name address plus the five-digit postal code.
Do I write “Korea” or “South Korea” as the country line?
Write “SOUTH KOREA” in English capitals. On a US-origin label, “Korea” alone can be ambiguous with North Korea, so the full “SOUTH KOREA” (or “Republic of Korea”) on the final line ensures USPS and UPS route the parcel correctly.
Sources
- Korea Post — national postal service (ePOST)
- Universal Postal Union — Republic of Korea postal addressing systems
- Addresses in South Korea — road-name system and postal codes
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Part of our Shipping to South Korea guide. Related: International Shipping hub · UK Address Format.
