South Korean Postal Codes
Korea Post administers South Korea's postal service.
Contents
History
The earliest postal codes in South Korea were five digits long, formatted as 123-45. The leading three digits represented a single post office.
The postal code system was reformed in 1988. New codes were six digits long, formatted as 123-456. The leading three digits represented a town, township, or neighborhood. This system was again reformed in 2000, further subdividing postal codes to distinguish carrier routes.
The postal code system was reformed again in 2015. New codes are five digits long, formatted as 12345. The leading three digits of the postal code represent a city, county, or autonomous district.
Specification
South Korean postal codes are 5 digits long (zero-padded).
Postal Code Prefixes by Province
The first two digits of the postal code represent the province, special cities, metropolitan cities, and special self-governing cities. Furthermore, they are ordered geographically.
Upper-Level District |
District Type |
Postal Code Prefixes |
Seoul |
special city |
01, 02, 03, 04, 05, 06, 07, 08 |
Gyeonggi |
province |
10, 11, 12, 13, 14, 15, 16, 17, 18 |
Incheon |
metropolitan city |
21, 22, 23 |
Gangwon |
province |
24, 25, 26 |
North Chungcheong (Chungcheongbuk) |
province |
27, 28, 29 |
Sejong |
special self-governing city |
30 |
South Chungcheong (Chungcheongnam) |
province |
31, 32, 33 |
Daejeon |
metropolitan city |
34, 35 |
North Gyeongsang (Gyeongsangbuk) |
province |
36, 37, 38, 39, 40 |
Daegu |
metropolitan city |
41, 42, 43 |
Ulsan |
metropolitan city |
44, 45 |
Busan |
metropolitan city |
46, 47, 48, 49 |
South Gyeongsang (Gyeongsangnam) |
province |
50, 51, 52, 53 |
North Jeolla (Jeollabuk) |
province |
54, 55, 56 |
South Jeolla (Jeollanam) |
province |
57, 58, 59 |
Gwangju |
metropolitan city |
61, 62 |
Jeju island |
province |
63 |
Postal Code Prefixes by District
The first three digits of the postal code represent the ulimate division of local government: one of a city, county, or an autonomous district
Historic Postal Code Prefixes by Province
For the old, six digit postal codes, the leading three digits represented the province, special cities, and metropolitan cities.
Postal Code Prefix Range |
Upper-Level District |
100-158 |
Seoul |
200-269 |
Gangwon |
300-395 |
Daejeon, Chungcheong |
400-487 |
Incheon, Gyeonggi |
500-597 |
Gwangju, Jeolla |
600-697 |
Busan, Ulsan, Jeju island, South Gyeongsang (Gyeongsangnam) |
700-799 |
Daegu, North Gyeongsang (Gyeongsangbuk) |