Keystone, South Dakota

Keystone is a town in the Black Hills region of Pennington County, South Dakota, United States. The population was 337 at the 2010 census. 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 the Mount Rushmore National Memorial, which is located just beyond city limits. Keystone was heavily damaged in the 1972 Black Hills flood.

Keystone, South Dakota
Town
Business district in Keystone
Motto(s): 
"Home Of Mount Rushmore"
Location in Pennington County and the state of South Dakota
Coordinates: 43°53′37″N 103°25′34″W
CountryUnited States
StateSouth Dakota
CountyPennington
Area
 • Total3.00 sq mi (7.77 km2)
 • Land3.00 sq mi (7.77 km2)
 • Water0.00 sq mi (0.00 km2)
Elevation
4,331 ft (1,320 m)
Population
 • Total337
 • Estimate 
(2019)[3]
343
 • Density114.33/sq mi (44.15/km2)
Time zoneUTC-7 (Mountain (MST))
 • Summer (DST)UTC-6 (MDT)
ZIP code
57751
Area code(s)605
FIPS code46-33820[4]
GNIS feature ID1261912[5]

The town took its name from a local mine, which most likely was named after the keystone Masonic symbol.[6]

Geography

Keystone is located at 43°53′37″N 103°25′34″W.[7]

According to the United States Census Bureau, the town has a total area of 2.86 square miles (7.41 km2), all land.[8]

Keystone has been assigned the ZIP code 57751 and the FIPS place code 33820.

Demographics
Historical population
CensusPop.%±
1980295—
1990232−21.4%
200031134.1%
20103378.4%
2019 (est.)343[3]1.8%
U.S. Decennial Census[9]

2010 census

At the 2010 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 per square mile (31.0/km2). The racial 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%.[2]

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.

2000 census

At the 2000 census there were 311 people, 152 households, and 84 families living in the town. The population density was 108.6 people per square mile (42.0/km2). There were 209 housing units at an average density of 73.0 per square mile (28.2/km2). The racial 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 the poverty line, including 17.9% of those under age 18 and 23.3% of those age 65 or over.

Arts and culture

Among its tourist attractions is the Black Hills Central Railroad, built in 1900 for Black Hills gold. It now operates passenger trains pulled by preserved steam 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 Gone With the Wind and the 1953 film House of Wax.

Carrie Ingalls (sister of Little House on the Prairie author Laura Ingalls Wilder) spent a significant part of her adult life there, living with her husband David N. Swanzey and his children. Her sister Mary Ingalls lived with them as an adult. Both Carrie and Mary died in Keystone, but were buried in the family plot in De Smet.

Bobby Buntrock, who played Harold on the TV series Hazel is buried in Keystone.

This town was one of the filming locations for the Columbia Pictures 1994 comedy film North.

  • Mount Rushmore
  • The National Presidential Wax Museum, a private museum in Keystone
  • Black Hills Central Railroad
  • Keystone Wye just north of the town
  • Identification card of griphite mineral
  • Crystals at the Etta Mine
  • Keystone schools from 1895 and 1899, now a museum

References
  1. "2019 U.S. Gazetteer Files". United States Census Bureau. Retrieved July 30, 2020.
  2. "U.S. Census website". United States Census Bureau. Retrieved 2012-06-21.
  3. "Population and Housing Unit Estimates". United States Census Bureau. May 24, 2020. Retrieved May 27, 2020.
  4. "U.S. Census website". United States Census Bureau. Retrieved 2008-01-31.
  5. "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
  6. Federal Writers' Project (1940). South Dakota place-names, v.1-3. University of South Dakota. p. 45.
  7. "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
  8. "US Gazetteer files 2010". United States Census Bureau. Archived from the original on 2012-01-24. Retrieved 2012-06-21.
  9. "Census of Population and Housing". Census.gov. Retrieved June 4, 2015.
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