Keystone town, South Dakota
Official LSAD Designation: Keystone town • Census GEOID: 4633820
• Pennington County
Keystone town is an incorporated town in Pennington County, South Dakota. According to official records from the Census (2025), Keystone town had an estimated population of 268 residents. Official Census Bureau geographic records classify this community under LSAD designation Keystone town (GEOID 4633820).
Local Government Administration U.S. Census Bureau GMAF
Town Of Keystone
Municipal
Official Title:
Finance Officer
Address:
PO BOX 689, KEYSTONE SD 57751-0689
County Of Pennington
County
Official Title:
Chairman
Address:
315 SAINT JOSEPH ST, STE 156, RAPID CITY SD 57701-2879
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 268 | 2025 |
| Median Household Income | $64,702 | 2020-2024 |
| Median Home Value | $263,900 | 2020-2024 |
| Land Area | 3.00 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).