Reduce the list, select first 2 letters of the city:
Listing cities (59 place(s)). Select the City to see the postcode(s):
Listing cities (59 place(s)). Select the City to see the postcode(s):
Position: Postcodes > Peru > San Martin > T.... >
Postcode finder: Peru, List of the cities starting with T. Peru San Martin Postcodes (Desktop version).