Home > DE > New Castle County > Wilmington > Zip 19803

Zip Code 19803 — Wilmington, DE

ZIP Code 19803 is associated with Wilmington, DE, in New Castle County. The listed population estimate is 22,279; estimated density is 679.5 people per square mile. Among records with population estimates, it ranks #11 of 26 in New Castle County and #18 of 65 in DE.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.799120, -75.542200)

Data MetricLocal Statistic
Postal / Zip Code19803
Primary CityWilmington
State / ProvinceDE
CountyNew Castle
Total Population22,279
Population Density679.5 people/sq mi
TimezoneAmerica/New_York

How 19803 Compares

MetricZIP 19803New Castle County recordsDE records
Population estimate22,279573,431 (sum)1,021,605 (sum)
Population Density679.5 /sq mi----
County population rank#11 of 26----
State population rank#18 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 19732Rockland1.7 mi89
ZIP 19810Wilmington2.3 mi26,530
ZIP 19710Montchanin2.3 miN/A
ZIP 19806Wilmington2.8 mi9,777
ZIP 19735Winterthur3.0 miN/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 →