South Korea
ISO 3166-1 country codes and official ISO 3166-2 subdivisions for South Korea. Use them in forms, validation, and CountriesDB integrations.
About South Korea codes
Need South Korea (KR) for a checkout form, shipping zone, or backend validation? This page summarizes the ISO 3166-1 country codes and official subdivisions developers use with CountriesDB.
This guide lists 17 official ISO 3166-2 subdivisions for South Korea. These are the same codes CountriesDB serves through widgets and the Backend Data API.
For production, use the CountriesDB country/subdivision widget or fetch South Korea from the Data API and validate codes server-side instead of copying values from this page.
ISO codes
Official subdivisions (17)
Official ISO 3166-2 codes for South Korea. Use these values in region/state selects and server-side validation, not informal or marketing region names.
| Code | Name | Type |
|---|---|---|
| KR-26 | Busan-gwangyeoksi | metropolitan city |
| KR-43 | Chungcheongbuk-do | province |
| KR-44 | Chungcheongnam-do | province |
| KR-27 | Daegu-gwangyeoksi | metropolitan city |
| KR-30 | Daejeon-gwangyeoksi | metropolitan city |
| KR-42 | Gangwon-teukbyeoljachido | special self-governing province |
| KR-29 | Gwangju-gwangyeoksi | metropolitan city |
| KR-41 | Gyeonggi-do | province |
| KR-47 | Gyeongsangbuk-do | province |
| KR-48 | Gyeongsangnam-do | province |
| KR-28 | Incheon-gwangyeoksi | metropolitan city |
| KR-49 | Jeju-teukbyeoljachido | special self-governing province |
| KR-45 | Jeollabuk-do | province |
| KR-46 | Jeollanam-do | province |
| KR-50 | Sejong | special self-governing city |
| KR-11 | Seoul-teukbyeolsi | special city |
| KR-31 | Ulsan-gwangyeoksi | metropolitan city |
Frequently asked questions
- What is the ISO 3166-1 code for South Korea?
- South Korea uses ISO 3166-1 alpha-2 KR, alpha-3 KOR, and numeric 410. These codes show up in forms, shipping, banking, and APIs.
- How many official ISO 3166-2 subdivisions does South Korea have?
- CountriesDB lists 17 official ISO 3166-2 subdivisions for South Korea (states, provinces, regions, or equivalent). Use them when you validate region selects and shipping zones.
- How do I use South Korea country and subdivision data in a form?
- Use the CountriesDB widget or Data API to fill country and subdivision selects for South Korea, then validate submitted codes with the Validation API so alpha-2 and ISO 3166-2 values stay consistent.
Use South Korea in your app
Add CountriesDB country and subdivision selects with the widget docs, or call the Backend Data API for South Korea (KR) and validate submissions with the Validation API. Guides stay in sync with the same dataset your project keys already use. widget docs.