How do you find 4 digit code after zip code?
Go to usps.com, click 'Find a ZIP code' and type-in your address.
Each 5-digit ZIP Code is divided into many ZIP+4 codes, with each ZIP+4 serving anywhere from a single address to one side of one block of a street. The specific ZIP+4 code depends on the address. Thus, your question is a bit like asking "What is the street number for Main Street?" or "What is the telephone number for area code 847?"
There are hundreds, if not thousands, of ZIP+4 codes, just within 11432. If each 5-digit ZIP Code had only one "plus 4," there would be no point to the "plus 4." Each ZIP+4 code serves at most one side of one block of one street; most businesses and P.O. Boxes have unique ZIP+4 codes, and an apartment building may have several.