Rapid City South Dakota ZIP Codes

Rapid City holds 4 ZIP codes, all inside one county and one postal prefix.

Every ZIP code in Rapid City

The complete list of Rapid City, South Dakota ZIP codes with the county each falls in.
ZIP code	County
57701	Pennington County
57702	Pennington County
57703	Pennington County
57709	Pennington County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Scope every ZIP code recorded for Rapid City. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Rapid City ZIP code begins 577. Those first three digits identify the sectional center facility that processes mail for this part of South Dakota. Statewide that range covers 58 ZIP codes, so Rapid City accounts for 7% of it.

Every South Dakota ZIP prefix and the region it covers →

Area codes covering Rapid City

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Rapid City occupies.

605 Area code 605

Rapid City South Dakota area codes in full →

Where Rapid City's ZIP codes sit

Each point is one Rapid City 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

Cities near Rapid City

The closest places to Rapid City with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Box Elder South Dakota ZIP codes	7.3 mi	1 ZIP code
Piedmont South Dakota ZIP codes	13 mi	1 ZIP code
Hermosa South Dakota ZIP codes	16 mi	1 ZIP code
Keystone South Dakota ZIP codes	16 mi	1 ZIP code
New Underwood South Dakota ZIP codes	19 mi	1 ZIP code
Hill City South Dakota ZIP codes	20 mi	1 ZIP code
Fairburn South Dakota ZIP codes	27 mi	1 ZIP code
Sturgis South Dakota ZIP codes	27 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance.