Pennington County ZIP Codes

Pennington County is a county of South Dakota.

ZIP codes: 14
Cities & towns: 11
Area codes: 1
Land area: 2,777 sq mi

Every ZIP code in Pennington County

577xx

The complete list of Pennington County, SD ZIP codes with the city each one delivers to.
ZIP code	City
57701	Rapid City
57702	Rapid City
57703	Rapid City
57709	Rapid City
57719	Box Elder
57725	Caputa
57745	Hill City
57751	Keystone
57761	New Underwood
57767	Owanka
57775	Quinn
57780	Scenic
57790	Wall
57791	Wasta

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Pennington County

A further 3 places in Pennington 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 Pennington 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 Pennington County's ZIP codes sit

Each point is the reference point of one Pennington 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 Pennington 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.