Zip Code 19709 — Middletown, DE

ZIP Code 19709 is associated with Middletown, DE, in New Castle County. The listed population estimate is 53,234; estimated density is 264.7 people per square mile. Among records with population estimates, it ranks #3 of 26 in New Castle County and #3 of 65 in DE.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.489230, -75.683140)

Data MetricLocal Statistic
Postal / Zip Code19709
Primary CityMiddletown
State / ProvinceDE
CountyNew Castle
Total Population53,234
Population Density264.7 people/sq mi
TimezoneAmerica/New_York

How 19709 Compares

MetricZIP 19709New Castle County recordsDE records
Population estimate53,234573,431 (sum)1,021,605 (sum)
Population Density264.7 /sq mi----
County population rank#3 of 26----
State population rank#3 of 65----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in DE

ZIP CodeCityDistancePopulation estimate
ZIP 19730Odessa2.7 mi425
ZIP 19731Port Penn4.9 mi655
ZIP 19733Saint Georges5.1 mi186
ZIP 19701Bear6.6 mi42,984
ZIP 19734Townsend7.5 mi14,214

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 →