Roberts County ZIP Codes

Roberts County is a county of South Dakota.

ZIP codes: 9
Cities & towns: 9
Area codes: 1
Land area: 1,101 sq mi

Every ZIP code in Roberts County

572xx

The complete list of Roberts County, SD ZIP codes with the city each one delivers to.
ZIP code	City
57224	Claire City
57227	Corona
57255	New Effington
57256	Ortley
57257	Peever
57260	Rosholt
57262	Sisseton
57266	Summit
57279	Wilmot

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Roberts County

Area codes covering Roberts 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 Roberts County's ZIP codes sit

Each point is the reference point of one Roberts 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 Roberts 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.