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Zip Code 19709 — Middletown, DE

19709 is a ZIP Code associated with Middletown, DE, located within New Castle. The postal region supports an estimated population of 53,234 residents across Data Pending housing units, with a population density of 264.7 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.489230, -75.683140)

Data Metric	Local Statistic
Postal / Zip Code	19709
Primary City	Middletown
State / Province	DE
County	New Castle
Total Population	53,234
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	264.7 people/sq mi
Timezone	America/New_York

How 19709 Compares

Metric	ZIP 19709	New Castle County	DE State Average
Population	53,234	573,431	1,021,605
Median Income	Data Pending	N/A	N/A
Population Density	264.7 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 19730	Odessa	2.7 mi	425	N/A
Zip 19731	Port Penn	4.9 mi	655	N/A
Zip 19733	Saint Georges	5.1 mi	186	N/A
Zip 19701	Bear	6.6 mi	42,984	N/A
Zip 19734	Townsend	7.5 mi	14,214	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →