Reduce the list, select first 2 letters of the city:
Listing cities (363 place(s)). Select the City to see the postcode(s):
Listing cities (363 place(s)). Select the City to see the postcode(s):
Position: Postcodes > Argentina > BUENOS AIRES > A.... >
Postcode finder: Argentina, List of the cities starting with A. Argentina BUENOS AIRES Postcodes (Desktop version).