Charles Mix County ZIP Codes

Charles Mix County is a county of South Dakota.

ZIP codes: 7
Cities & towns: 7
Area codes: 1
Land area: 1,097 sq mi

Every ZIP code in Charles Mix County

573xx

The complete list of Charles Mix County, SD ZIP codes with the city each one delivers to.
ZIP code	City
57329	Dante
57342	Geddes
57356	Lake Andes
57361	Marty
57367	Pickstown
57369	Platte
57380	Wagner

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Charles Mix County

A further 1 place in Charles Mix County appears in the postal source without a page of its own; its codes are in the table above and each one links to its own page.

Area codes covering Charles Mix 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 Charles Mix County's ZIP codes sit

Each point is the reference point of one Charles Mix 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 Charles Mix 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.