Keystone, SD Population

Population: 311. Estimated population in July 2020: 319 (+2.6% change)
Males: 147 (47.3%), Females: 164 (52.7%)

Pennington County

Zip code: 57751

Median resident age: 41.1 years
Median household income: $26,406
Median house value: $91,500

Races in Keystone:

  • White Non-Hispanic (93.2%)
  • Hispanic (3.5%)
  • American Indian (2.9%)
  • Two or more races (2.3%)

Ancestries: German (39.9%), Irish (15.1%), Norwegian (12.9%), English (6.1%), United States (5.1%), French (3.9%).

Elevation: 4323 feet

Land area: 2.9 square miles

Population

For population 25 years and over in Keystone

  • High school or higher: 83.2%
  • Bachelor’s degree or higher: 14.5%
  • Graduate or professional degree: 2.8%
  • Unemployed: 8.2%
  • Mean travel time to work: 24.0 minutes

For population 15 years and over in Keystone town

  • Never married: 23.8%
  • Now married: 42.6%
  • Separated: 2.9%
  • Widowed: 9.0%
  • Divorced: 21.7%

0.6% Foreign born

Population change in the 1990s: +78 (+33.5%).

Hospitals

Hospitals/medical centers near Keystone:

Airports

Airports certified for carrier operations nearest to Keystone:

  • RAPID CITY REGIONAL (about 28 miles; RAPID CITY, SD; Abbreviation: RAP)
  • ELLSWORTH AFB (about 28 miles; RAPID CITY, SD; Abbreviation: RCA)
  • ALLIANCE MUNI (about 134 miles; ALLIANCE, NE; Abbreviation: AIA)
Other public-use airports nearest to Keystone:

  • CUSTER STATE PARK (about 14 miles; FAIRBURN, SD; Abbreviation: 3V0)
  • CUSTER COUNTY (about 18 miles; CUSTER, SD; Abbreviation: CUT)
  • STURGIS MUNI (about 37 miles; STURGIS, SD; Abbreviation: 49B)

Colleges and Universities

Colleges/universities with over 2000 students nearest to Keystone:

  • SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY (about 20 miles; RAPID CITY, SD; Full-time enrollment: 2,002)
  • BLACK HILLS STATE UNIVERSITY (about 52 miles; SPEARFISH, SD; Full-time enrollment: 3,190)
  • CHADRON STATE COLLEGE (about 81 miles; CHADRON, NE; Full-time enrollment: 2,144)
  • CASPER COLLEGE (about 211 miles; CASPER, WY; Full-time enrollment: 2,564)
  • UNIVERSITY OF WYOMING (about 223 miles; LARAMIE, WY; Full-time enrollment: 9,665)
  • UNIVERSITY OF NORTHERN COLORADO (about 256 miles; GREELEY, CO; Full-time enrollment: 10,983)
  • AIMS COMMUNITY COLLEGE (about 259 miles; GREELEY, CO; Full-time enrollment: 3,722)

Libraries

Library in Keystone:

  • KEYSTONE TOWN LIBRARY (Operating income: $17,378; Location: 1101 MODILL ST; 5,022 books; 34 audio materials; 98 video materials; 2 serial subscriptions)

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