57339   Zip Code Fort Thompson Buffalo SD United States

City Fort Thompson
County Buffalo
State South Dakota
Latitude 44.11233
Longitude -99.47862
Population 1,390
Density 25.65 people per square mile
Time Zone America/Chicago
  • 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: $46,136
Median individual: $26,136

Race

Mode: 85.5% Native

Gender

 56.5% male 

Rent

  $605 / month  

Age

Median: 21.3 years old

Education

With at least college degree: 7.2%
With STEM degree: 42.3%

Marital Status

 16.3% married 

Never married: 64.7%

Labor Force Participation

 49.8% working 

Unemployed: 10.0%

Average Family Size

 5.18 people 

Commute Time

 10.8 minutes 

Health Care

 45.3% uninsured 

Poverty

 36.3%

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

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