Currently showing 17 regions
Provinces, Special Cities & Metropolitan Cities
17
Busan
Chungcheongbuk-do
Chungcheongnam-do
Daegu
Daejeon
Gangwon-do
Gwangju
Gyeonggi-do
Gyeongsangbuk-do
Gyeongsangnam-do
Incheon
Jeju-do
Jeollabuk-do
Jeollanam-do
Sejong
Seoul
Ulsan
Frequently Asked Questions
Postal Code System
South Korea launched a new 5-digit postal code system on August 1, 2015, replacing the previous 6-digit code. The first two digits of the new postal code represent the province/special city/metropolitan city, the third digit represents the city/county/district, and the last two digits are serial numbers representing specific delivery zones.
Dialing Format & Area Codes
The country prefix for South Korea is +82. Local landline numbers begin with 0 (e.g., 02 for Seoul, 051 for Busan, 031 for Gyeonggi-do). Mobile phone numbers typically start with 010. The domestic dialing length of landlines (excluding the leading 0) is usually 9 to 10 digits, and mobile phones are 10 digits. We provide simulated test numbers complying with local telecommunication rules.
What is the length and format of postal codes in South Korea?
South Korea uses a 5-digit numeric postal code system (introduced in August 2015). The first two digits represent the province or special city, the third represents the city/county/district, and the last two are serial numbers for the delivery zone.
How are telephone area codes structured and allocated in South Korea?
South Korean landline area codes start with '0' and are 2 or 3 digits long (e.g., 02 for Seoul, 051 for Busan). The domestic dialing length (including area code) is usually 9 to 10 digits, while mobile numbers start with 010 and are 11 digits.
How do you dial a South Korea phone number from abroad?
To call South Korea, dial '+82', followed by the area code (without the leading '0') and the subscriber number. For example, to call Seoul: +82 2 1234 5678; to call a mobile: +82 10 1234 5678.
Do postal codes and telephone area codes in South Korea align geographically?
No, postal codes and telephone area codes are independently planned and managed by different authorities (the postal service vs. the telecom authority), so their geographic boundaries do not align directly. One area code usually contains hundreds or thousands of postal codes.
Why is the correct postal code critical for mail and package delivery in South Korea?
The correct postal code is the core basis for modern logistics and automated postal sorting. Writing the correct postal code avoids misrouting, reduces sorting steps, shortens delivery times, and ensures precise delivery to specific blocks or buildings.
How can I verify if a South Korea postal code or telephone area code is valid?
You can use the directory hierarchy on our website to browse states, cities, and districts to check the postal code and area code mapping. For official confirmation, you can consult the official postal service or telecom authority of that country.