57751   Zip Code Keystone Pennington SD United States

City Keystone
County Pennington
State South Dakota
Latitude 43.86767
Longitude -103.42346
Population 893
Density 20.21 people per square mile
Time Zone America/Denver
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $97,969
Median individual: $45,833

Race

Mode: 92.5% White

Gender

 53.8% male 

Rent

  $600 / month  

Median house value: $496,748.0

Age

Median: 54.2 years old

Education

With at least college degree: 43.1%
With STEM degree: 51.5%

Marital Status

 64.6% married 

Never married: 22.6%

Labor Force Participation

 66.0% working 

Unemployed: 2.9%

Average Family Size

 2.98 people 

Commute Time

 34.2 minutes 

Health Care

 12.5% uninsured 

Poverty

 4.6%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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