New Castle zipcode

CityNew Castle
ZIP Code19721
TypeCompany/Organization
State CodeDE
StateDelaware

ZIP code of New Castle is 19721. This place is located in Delaware state in US. To send any postal service to New Castle, you must use 19721 zipcode.

You should avoid following 1 city name of Delaware to be used with the ZIP code 19721.

  1. Citibank, DE

Latest poll updates

Get notified on trending polls and opinions