43 Sejong-daero 11-gil, Jung-gu, Seoul

43 Sejong-daero 11-gil, Jung-gu, Seoul is a South Korean address with the postal code 04513. In Korean it is written 서울특별시 중구 세종대로11길 43. Its older lot-number form is Seosomun-dong, 120-18.

Can I use this English address as it is?

Yes. 43 Sejong-daero 11-gil, Jung-gu, Seoul is the official romanisation published by Korea's Ministry of the Interior and Safety, not a transliteration we generated. You can paste it into a shipping form at Amazon, iHerb or AliExpress, or into a visa application, without changing it. Korean addresses run from the smallest unit to the largest in Korean and the other way round in English, and this line is already in the English order.

Where does the postal code go?

Put 04513 in the ZIP or postal code field, and add South Korea as the country. Korean postal codes have been five digits since August 2015; if a form rejects a six-digit code you have an old one. For international mail the full line reads "43 Sejong-daero 11-gil, Jung-gu, Seoul, 04513, South Korea".

Does the whole of Sejong-daero 11-gil share this postal code?

Yes. Every building on Sejong-daero 11-gil uses 04513. The road sits inside a single delivery zone, so the building number does not change the code. That is not true of longer roads, where the code changes partway along.

What is the lot-number address for?

Seosomun-dong, 120-18 is the same place in the older jibun system, which numbered land parcels instead of buildings. Korea switched to road-name addresses in 2014, but property deeds, land registers and some older records still use the lot number. For post, delivery and official forms, use the road-name address above.

How do I add a floor or unit number?

Write the building address first, then a comma, then the unit. "43 Sejong-daero 11-gil, Jung-gu, Seoul, Unit 502" or "43 Sejong-daero 11-gil, Jung-gu, Seoul, Bldg 101 Unit 1203" are both correct. Korea does not fold the unit into the street line, and delivery works from the building address plus the postal code, so the unit only needs to be readable to the courier at the door.

What is around Seosomun-dong?

These are public facilities in the same legal district (Seosomun-dong). They are grouped by district rather than measured by distance, so walking times will vary.

Government offices

• 상업, 중부등기소 서소문로11길 34
• 서울시청 서소문별관 덕수궁길 15
• 서울시청직장어린이집 서소문로11길 24
• 시청역 2호선 서소문로 지하127

Health centres and clinics

• 주내과의원 서소문로11길 6-1

Police and fire

• 서울남대문경찰서 서소문파출소 서소문로 131-1

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