Reduce the list, select first 2 letters of the city:
Listing cities (62 place(s)). Select the City to see the postcode(s):
Listing cities (62 place(s)). Select the City to see the postcode(s):
Position: Postcodes > South Korea > Gyeonggi-do/경기 > B.... >
Postcode finder: South Korea, List of the cities starting with B. South Korea Gyeonggi-do/경기 Postcodes (Desktop version).