Keystone, South Dakota
town in Pennington County, South Dakota From Wikipedia, the free encyclopedia
Keystone is a town in the Black Hills region of Pennington County, South Dakota, United States. The population was 240 at the 2020 census.[3] It is known for being the location of Mount Rushmore National Memorial, which is located just beyond city limits.
Keystone, South Dakota | |
|---|---|
 Business district in Keystone | |
| Motto: "Home of Mount Rushmore" | |
 Location in Pennington County and the state of South Dakota | |
| Coordinates: 43°53′42″N 103°25′36″W | |
| Country | United States |
| State | South Dakota |
| County | Pennington |
| Area | |
| • Total | 3.00 sq mi (7.77 km2) |
| • Land | 3.00 sq mi (7.77 km2) |
| • Water | 0.00 sq mi (0.00 km2) |
| Elevation | 4,554 ft (1,388 m) |
| Population | |
| • Total | 240 |
| • Density | 80.00/sq mi (30.89/km2) |
| Time zone | UTC-7 (Mountain (MST)) |
| • Summer (DST) | UTC-6 (MDT) |
| ZIP code | 57751 |
| Area code | 605 |
| FIPS code | 46-33820[4] |
| GNIS feature ID | 1267444[2] |
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