Reduce the list, select first 2 letters of the city:
Listing cities (22 place(s)). Select the City to see the postcode(s):
Listing cities (22 place(s)). Select the City to see the postcode(s):
Position: Postcodes > South Korea > Gwangju/광주 > J.... >
Postcode finder: South Korea, List of the cities starting with J. South Korea Gwangju/광주 Postcodes (Desktop version).