Home > DE > New Castle County > Wilmington > Zip 19804

Zip Code 19804 — Wilmington, DE

ZIP Code 19804 is associated with Wilmington, DE, in New Castle County. The listed population estimate is 18,779; estimated density is 1,010.4 people per square mile. Among records with population estimates, it ranks #12 of 26 in New Castle County and #20 of 65 in DE.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.716600, -75.620940)

Data MetricLocal Statistic
Postal / Zip Code19804
Primary CityWilmington
State / ProvinceDE
CountyNew Castle
Total Population18,779
Population Density1,010.4 people/sq mi
TimezoneAmerica/New_York

How 19804 Compares

MetricZIP 19804New Castle County recordsDE records
Population estimate18,779573,431 (sum)1,021,605 (sum)
Population Density1,010.4 /sq mi----
County population rank#12 of 26----
State population rank#20 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 19805Wilmington2.5 mi41,402
ZIP 19808Wilmington2.8 mi39,082
ZIP 19801Wilmington4.0 mi16,327
ZIP 19806Wilmington4.4 mi9,777
ZIP 19736Yorklyn4.6 mi127

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 →