Reduce the list, select first 2 letters of the city:
Listing cities (158 place(s)). Select the City to see the postcode(s):
Listing cities (158 place(s)). Select the City to see the postcode(s):
Position: Postcodes > Portugal > Viana do Castelo > F.... >
Postcode finder: Portugal, List of the cities starting with F. Portugal Viana do Castelo Postcodes (Desktop version).