Dorchester County ZIP Codes

Dorchester County is a county of Maryland.

ZIP codes: 16
Cities & towns: 16
Area codes: 3
Land area: 541 sq mi

Every ZIP code in Dorchester County

216xx–218xx

The complete list of Dorchester County, MD ZIP codes with the city each one delivers to.
ZIP code	City
21613	Cambridge
21622	Church Creek
21626	Crapo
21627	Crocheron
21631	East New Market
21634	Fishing Creek
21643	Hurlock
21648	Madison
21659	Rhodesdale
21664	Secretary
21669	Taylors Island
21672	Toddville
21675	Wingate
21677	Woolford
21835	Linkwood
21869	Vienna

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Dorchester County codes above are listed without a column we would have to invent.

Cities and towns in Dorchester County

A further 10 places in Dorchester County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Dorchester County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Dorchester County's ZIP codes sit

Each point is the reference point of one Dorchester County 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

Scope every ZIP code recorded in Dorchester County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.