Reduce the list, select first 2 letters of the city:
Listing cities (148 place(s)). Select the City to see the postcode(s):
Listing cities (148 place(s)). Select the City to see the postcode(s):
Position: Postcodes > Peru > San Martin > A.... >
Postcode finder: Peru, List of the cities starting with A. Peru San Martin Postcodes (Desktop version).