US location post office
ZIP Code 57620
- Zip Code: 57620
- Type: Standard
- Official USPS city name: Bison
- Official USPS State Code: SD
- Official State Name: South Dakota
- ZCTA: TRUE
- Population: 498.0
- Density: 0.5
- Primary Official County Code: 46105
- Primary Official County Name: Perkins
- Official County Name: Perkins
- Official County Code: 46105
- Imprecise: FALSE
- Military: FALSE
- Timezone: America/Denver (10:05 AM Monday, May 20 2024-05-20 (GMT -0600))
- Geo Point: 45.38241, -102.54875
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