South Korea Postal codes
대한민국
36.0K
5 chars
17
4
Interactive Map
Explore South Korea's 17 provinces with our interactive map.
Find Post Offices
Locate post offices across South Korea. Find addresses and contact information.
Understanding South Korea Postal codes
Government correspondence mailed within South Korea carries five-digit routing digits (03170); KR internal mail centers index trays partly by postal.
Key Characteristics
Code Type
Numeric
Administered By
National Postal Service
Coverage
Nationwide
Postal code format breakdown
South Korea uses numeric postal codes with 5 digits (example: 03170). In our directory, these codes are organized from provinces down to neighborhoods.
Visual Structure
Government correspondence mailed within South Korea carries five-digit routing digits (03170); KR internal mail centers index trays partly by postal.
Administrative Hierarchy
How South Korea organises areas for postal codes
Provinces Directory
Browse all 17 top-level divisions
Addressing Mail to South Korea
Step-by-step guide for correct address formatting
Sample Address Block
Name; Seoul; Gangnam-gu; Teheran-ro 123; 06134; SOUTH KOREA
Delivery Best Practices
Tips for successful mail and package delivery
Always verify the postal code
Verify your postal code is complete (5 digits) before sending. Use our lookup tool to confirm accuracy.
Include all address levels
Write the full address hierarchy for best results.
Avoid abbreviations
Write out full province names to prevent sorting errors.
Don't omit the postal code
Missing postal codes cause significant delivery delays and may result in returned mail.
Shipping to South Korea
What to know when sending packages
Standard domestic delivery within South Korea typically takes 2–7 business days. International packages require complete address information including the postal code. Always include the correct 5-character code for fastest routing.
Frequently Asked Questions
Common questions about South Korea postal codes
What is the postal code format for South Korea?
South Korea uses 5 digits in the postal code. An example is 03170. Government correspondence mailed within South Korea carries five-digit routing digits (03170); KR internal mail centers index trays partly by postal.
How many provinces does South Korea have?
South Korea has 17 provinces with postal code coverage. Use our browse tool to explore them.
How do I find my postal code in South Korea?
Use our free lookup or browse by province to find the exact postal code for your location.
Where do I write the postal code on a South Korea address?
The postal code is written on the same line as or immediately after the province, before the country name when mailing internationally.