Lawrence County ZIP Codes

Lawrence County is a county of South Dakota.

ZIP codes: 7
Cities & towns: 6
Area codes: 1
Land area: 800 sq mi

Every ZIP code in Lawrence County

577xx

The complete list of Lawrence County, SD ZIP codes with the city each one delivers to.
ZIP code	City
57732	Deadwood
57754	Lead
57759	Nemo
57779	Saint Onge
57783	Spearfish
57793	Whitewood
57799	Spearfish

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Lawrence County

A further 2 places in Lawrence 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 Lawrence County

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

605 Area code 605

Where Lawrence County's ZIP codes sit

Each point is the reference point of one Lawrence 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 Lawrence 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.