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Wilmington Delaware ZIP Codes

Wilmington holds 25 ZIP codes, all inside one county and one postal prefix.

Every ZIP code in Wilmington

The complete list of Wilmington, Delaware ZIP codes with the county each falls in.
ZIP codeCounty
19801New Castle County
19802New Castle County
19803New Castle County
19804New Castle County
19805New Castle County
19806New Castle County
19807New Castle County
19808New Castle County
19809New Castle County
19810New Castle County
19850New Castle County
19880New Castle County
19884New Castle County
19885New Castle County
19886New Castle County
19890New Castle County
19891New Castle County
19892New Castle County
19893New Castle County
19894New Castle County
19895New Castle County
19896New Castle County
19897New Castle County
19898New Castle County
19899New Castle County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Wilmington codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Wilmington. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Wilmington ZIP code begins 198. Those first three digits identify the sectional center facility that processes mail for this part of Delaware. No other Delaware community draws on the 198xx range — it belongs entirely to Wilmington.

Every Delaware ZIP prefix and the region it covers →

Area codes covering Wilmington

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Wilmington occupies.

Wilmington Delaware area codes in full →

Where Wilmington's ZIP codes sit

Each point is one Wilmington ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Cities near Wilmington

The closest places to Wilmington with their own ZIP code list, nearest first.
CityDistanceZIP codes
New Castle Delaware ZIP codes4.9 mi3 ZIP codes
Bear Delaware ZIP codes11 mi1 ZIP code
Delaware City Delaware ZIP codes12 mi1 ZIP code
Newark Delaware ZIP codes13 mi10 ZIP codes
Odessa Delaware ZIP codes21 mi1 ZIP code
Middletown Delaware ZIP codes23 mi1 ZIP code
Townsend Delaware ZIP codes25 mi1 ZIP code
Smyrna Delaware ZIP codes31 mi1 ZIP code

Straight-line distance between place reference points, not driving distance.