Reduce the list, select first 2 letters of the city:
Listing cities (32 place(s)). Select the City to see the postcode(s):
Listing cities (32 place(s)). Select the City to see the postcode(s):
Position: Postcodes > Mexico > San Luis Potosi > B.... >
Postcode finder: Mexico, List of the cities starting with B. Mexico San Luis Potosi Postcodes (Desktop version).