Reduce the list, select first 2 letters of the city:
Listing cities (112 place(s)). Select the City to see the postcode(s):
Listing cities (112 place(s)). Select the City to see the postcode(s):
Position: Postcodes > United States > Illinois > S.... >
Postcode finder: United States, List of the cities starting with S. United States Illinois Postcodes (Desktop version).