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City ZIP codes · Delaware

Dover, DE ZIP Codes

5 ZIP codes use the postal name Dover, Delaware (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 2 residential and 3 for PO boxes or a single organization. Median household income runs from $66,388 in 19901 to $66,908 in 19904 (Census Bureau, ACS 2020-2024). Dover's most populous ZIP code is 19904, with 38,818 people (ACS 2020-2024); 21% of its land is in the city of Dover.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Dover's ZIP codes?

19901: $66k median household income19904: $67k median household income199011990419901: $66k median household income19904: $67k median household income199011990419901: $66k median household income19904: $67k median household income1990119904
The 2 residential ZIP codes named Dover, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Dover's ZIP codes?

The highest median household income is in 19904 ($66,908), the lowest in 19901 ($66,388). Home values run from $273,000 in 19901 to $309,400 in 19904.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 2 residential ZIP codes of Dover

Residential ZIP codes with the postal name Dover, DE, largest first (ACS 2020-2024); sort by any column
County
19904 Kent County 38,818 899 $67k $309k
19901 Kent County 37,763 498 $66k $273k

Download the 5 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Dover

3 ZIP codes named Dover have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Dover, DE: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
19903Kent County
19905Kent County
19906Kent County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Dover's ZIP codes reach?

Dover's residential ZIP codes lie in Kent County.

Which places do Dover's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Dover's residential ZIP codes cover Dover itself and 7 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

  • Cheswold 19904
  • Dover Base Housing census-designated 19901
  • Highland Acres census-designated 19901
  • Kent Acres census-designated 19901
  • Leipsic 19901
  • Little Creek 19901
  • Rodney Village census-designated 19904

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Dover's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Dover starts with 199.

Three-digit prefixes of Dover's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Dover's
PrefixSectional centerHereAll codes
199 Wilmington, DE (SCF 197) 5 44

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.