Reduce the list, select first 2 letters of the city:
Listing cities (26 place(s)). Select the City to see the postcode(s):
Listing cities (26 place(s)). Select the City to see the postcode(s):
Position: Postcodes > United States > Idaho > C.... >
Postcode finder: United States, List of the cities starting with C. United States Idaho Postcodes (Desktop version).