Reduce the list, select first 2 letters of the city:
Listing cities (138 place(s)). Select the City to see the postcode(s):
Listing cities (138 place(s)). Select the City to see the postcode(s):
Position: Postcodes > Indonesia > Central Java > B.... >
Postcode finder: Indonesia, List of the cities starting with B. Indonesia Central Java Postcodes (Desktop version).