Pennington County, SD ZIP codes
There are 10 ZIP codes in Pennington County, SD, in 7 towns, from 57701 to 57790. The largest are 57701 (Rapid City), 57702 (Rapid City) and 57703 (Rapid City). 1 more crosses into it from a neighbouring county: 57761.
The county seat is Rapid City.
- ZIP codes
- 10
- Partly in it
- 1 more
- Towns
- 7
- County seat
- Rapid City
- County FIPS
46103- State
- South Dakota
- Population
- 113,512
- Median household income
- $74,517
- Land area
- 2,777 sq mi
- Area code
- 605
- Metro area
- Rapid City
Pennington County ZIP codes by town
- Rapid City (county seat)
- 57701, 57702, 57703, 57709
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
ZIP codes partly in Pennington County
This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Pennington County.
- 57761 New Underwood · mostly in Meade County
Map of Pennington County ZIP codes
The ZIP codes of Pennington County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Pennington County in numbers
About 113,512 people live in Pennington County, in 46,370 households, the 2nd most populous of South Dakota's 66 counties. The median household income is $74,517 a year, about the same as the South Dakota median of $75,081 (US: $80,734). The median owner-occupied home is valued at $302,200 (17% above the South Dakota median), and median gross rent is $1,120 a month. The median age is 40.1; 34.6% of adults 25 and over hold a bachelor's degree or higher (31.9% across South Dakota); the average commute takes 19 minutes.
| Population | 113,512 |
|---|---|
| Households | 46,370 |
| Median age | 40.1 |
| Median household income | $74,517 |
| Median home value | $302,200 |
| Median gross rent | $1,120 |
| Bachelor's degree or higher | 34.6% |
| Mean commute | 19.4 min |
| Population density | 41 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Pennington County
| Town | ZIP codes | Population |
|---|---|---|
| Rapid City | 4 | 77,946 |
| Hill City | 1 | 834 |
| Wall | 1 | 622 |
| Keystone | 1 | 336 |
| Scenic | 1 | 70 |
| Quinn | 1 | 48 |
| Caputa | 1 | 27 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Pennington County.
- Campbell County, WY (8)
- Meade County (14)
- Lawrence County (7)
- Oglala Lakota County (8)
- Custer County (4)
- Weston County, WY (4)
- Jackson County (4)
- Niobrara County, WY (4)
- Haakon County (3)
Not sure you are in Pennington County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Pennington County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
57701 | Rapid City , SD | Standard | 45,795 | $56,461 | $251,200 |
57702 | Rapid City , SD | Standard | 35,595 | $91,457 | $389,700 |
57703 | Rapid City , SD | Standard | 18,013 | $83,739 | $277,100 |
57709 | Rapid City , SD | No street area | — | — | — |
57725 | Caputa , SD | Standard | 130 | $48,214 | $283,300 |
57745 | Hill City , SD | Standard | 1,894 | $88,194 | $343,900 |
57751 | Keystone , SD | Standard | 893 | $97,969 | $473,500 |
57775 | Quinn , SD | Standard | 191 | $77,750 | $87,700 |
57780 | Scenic , SD | Standard | 70 | $40,192 | — |
57790 | Wall , SD | Standard | 1,147 | $75,096 | $187,500 |
Cite this page
zipcodes.pro. “Pennington County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/sd/county/pennington
Underlying data is public domain or openly licensed — sources, vintages and licences.