ZIP Code 19721

New Castle, Delaware

ZIP Code Information

ZIP Code19721
City New Castle
State Delaware (DE)
CountyNew Castle
Timezone America/New_York (UTC-4) Details
Area Codes (state) 302 Details

ZIP code 19721 is the delivery code the USPS assigns to New Castle, Delaware. The ZIP lies within New Castle County. Clocks here follow the America/New_York time zone (UTC-4).

What you can do with ZIP code 19721

  • Write a mailing address: New Castle, DE 19721. The ZIP goes last, after the state abbreviation.
  • Check whether a shipping or delivery quote applies to this area — most US carriers price by ZIP code rather than by city.
  • Look up the local time zone before scheduling a call — the ZIP tells you which zone applies to that address.
  • Compare the ZIP with neighbouring codes to see how population and income shift block by block.

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Nearby ZIP Codes

Radius search
ZIP CodeCityDistance
19715 Newark 0 km Distance
19890 Wilmington 0 km Distance
19712 Newark 0 km Distance
19880 Wilmington 0 km Distance
19718 Newark 0 km Distance
19850 Wilmington 0 km Distance
19891 Wilmington 0 km Distance
19892 Wilmington 0 km Distance
19714 Newark 0 km Distance
19725 Newark 0 km Distance

Nearby Cities

Frequently Asked Questions

ZIP code 19721 is located in New Castle, Delaware.

ZIP code 19721 is in New Castle county, Delaware.

ZIP code 19721 is in the America/New_York timezone.