Reduce the list, select first 2 letters of the city:
Listing cities (44 place(s)). Select the City to see the postcode(s):
Listing cities (44 place(s)). Select the City to see the postcode(s):
Position: Postcodes > United States > New York > O.... >
Postcode finder: United States, List of the cities starting with O. United States New York Postcodes (Desktop version).