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Port Penn, DE ZIP code

The ZIP code for Port Penn (also written Pt. Penn), Delaware is 19731. It is in New Castle County.

Population in these ZIPs
655
Avg. median income
$71,300population-weighted
Typical home value
$292,600population-weighted
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ZIP codes within 10 miles

Port Penn, DE ZIP code list

Port Penn, DE ZIP codes
ZIP codePopulationMedian incomeTypical home value
19731655$71,282$292,600

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Port Penn

Frequently asked questions

What is the ZIP code for Port Penn, DE?

The ZIP code for Port Penn, DE is 19731.

What county is Port Penn, Delaware in?

Port Penn ZIP codes are in New Castle County.