Keystone, South Dakota | |
|---|---|
 Business district in Keystone (March 2012) | |
| Motto: "Home ofMount Rushmore" | |
 Location inPennington County and the state ofSouth Dakota | |
| Coordinates:43°53′36″N103°25′32″W / 43.89333°N 103.42556°W /43.89333; -103.42556 | |
| 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 sq mi (0.00 km2) |
| Elevation | 4,554 ft (1,388 m) |
| Population | |
• Total | 240 |
| • Density | 80.0/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] |
Keystone is a city in theBlack Hills region ofPennington County,South Dakota, United States. The population was 240 at the2020 census.[5] It had its origins in 1883 as a mining town, and has since transformed itself into a resort town, serving the needs of the millions of visitors to theMount Rushmore National Memorial, which is located just beyond the town limits. Keystone was heavily damaged in the1972 Black Hills flood.
The town took its name from a local mine, which most likely was named after the keystoneMasonic symbol.[6]
According to theUnited States Census Bureau, the town has a total area of 2.86 square miles (7.41 km2), all land.[7]
| Census | Pop. | Note | %± |
|---|---|---|---|
| 1980 | 295 | — | |
| 1990 | 232 | −21.4% | |
| 2000 | 311 | 34.1% | |
| 2010 | 337 | 8.4% | |
| 2020 | 240 | −28.8% | |
| U.S. Decennial Census[8][3] | |||
At the2010 census there were 337 people, 153 households, and 81 families living in the town. The population density was 117.8 inhabitants per square mile (45.5/km2). There were 230 housing units at an average density of 80.4 units per square mile (31.0 units/km2). Theracial makeup of the town was 93.8% White, 3.3% Native American, 0.6% Asian, 0.3% Pacific Islander, 0.3% from other races, and 1.8% from two or more races. Hispanic or Latino of any race were 8.3%.[9]
Of the 153 households 23.5% had children under the age of 18 living with them, 39.2% were married couples living together, 8.5% had a female householder with no husband present, 5.2% had a male householder with no wife present, and 47.1% were non-families. 34.0% of households were one person and 10.4% were one person aged 65 or older. The average household size was 2.20 and the average family size was 2.83.
The median age in the town was 42.8 years. 22.3% of residents were under the age of 18; 3.8% were between the ages of 18 and 24; 27.5% were from 25 to 44; 33.5% were from 45 to 64; and 12.8% were 65 or older. The gender makeup of the town was 50.7% male and 49.3% female.
At the2000 census there were 311 people, 152 households, and 84 families living in the town. The population density was 108.6 inhabitants per square mile (41.9/km2). There were 209 housing units at an average density of 73.0 units per square mile (28.2 units/km2). Theracial makeup of the town was 95.50% White, 1.93% Native American, 0.32% from other races, and 2.25% from two or more races. Hispanic or Latino of any race were 3.54%.[4]
Of the 152 households 27.0% had children under the age of 18 living with them, 37.5% were married couples living together, 12.5% had a female householder with no husband present, and 44.1% were non-families. 35.5% of households were one person and 11.8% were one person aged 65 or older. The average household size was 2.05 and the average family size was 2.60.
The age distribution was 20.9% under the age of 18, 5.8% from 18 to 24, 30.9% from 25 to 44, 30.9% from 45 to 64, and 11.6% 65 or older. The median age was 41 years. For every 100 females, there were 89.6 males. For every 100 females age 18 and over, there were 95.2 males.
The median household income was $26,406, and the median family income was $36,250. Males had a median income of $24,219 versus $17,500 for females. The per capita income for the town was $15,828. About 13.9% of families and 16.9% of the population were below thepoverty line, including 17.9% of those under age 18 and 23.3% of those age 65 or over.
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Among its tourist attractions is theBlack Hills Central Railroad, built in 1900 forBlack Hills gold. It now operates passenger trains pulled by preservedsteam locomotives.
Another prominent local attraction is The National Presidential Wax Museum, which features wax sculptures of every president in U.S. history and several notable Sioux Chiefs, inventors, and international political figures. The wax figures are the work of world-renowned wax sculptor Katherine Stubergh whose notable works include wax figures used in the 1939 filmGone With the Wind and the 1953 filmHouse of Wax.
Carrie Ingalls (sister ofLittle House on the Prairie authorLaura Ingalls Wilder) spent a significant part of her adult life there, living with her husband David N. Swanzey and his children. Her sisterMary Ingalls lived with them as an adult. Both Carrie and Mary died in Keystone, but were buried in the family plot inDe Smet.
It is inHill City School District 51-2.[10]
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Municipalities and communities ofPennington County, South Dakota,United States | ||
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| Ghost towns | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
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