Zip Area Code

New Castle, Delaware

New Castle, Delaware, in New Castle County, has ZIP codes 19720, 19721 and 19726 and area code 302.

ZIP codes
19720, 19721, 19726
Area code
302
Time zone
Eastern Time
Coordinates
39.6065, -75.6049

ZIP codes in New Castle

ZIP codePost officeCountyArea codes
19720New CastleNew Castle County302
19721*New CastleNew Castle County302
19726*New CastleNew Castle County302

* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.

Area code for New Castle

  • Area code 302

    In service since 1947. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Time zone

New Castle is in the Eastern Time zone.

Towns near New Castle