ZIP Code 16021 is located in the county of Butler in the state of Pennsylvania. 16021 ZIP Code is spread between the coordinates of +41.08 Latitude and -79.97 Longitude. 16021 ZIP Code is part of the 724 area code. There are 0 postal offices in zip code 16021.
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 16021. Always when you mail a package or a letter, be attentive to mention the preferred or acceptable cities. Using any city in the list of unacceptable cities may result in unforseen delays.