US location post office
ZIP Code 57661
- Zip Code: 57661
- Type: POBox
- Official USPS city name: Whitehorse
- Official USPS State Code: SD
- Official State Name: South Dakota
- ZCTA: TRUE
- Population: 113.0
- Density: 2.1
- Primary Official County Code: 46041
- Primary Official County Name: Dewey
- Official County Name: Dewey
- Official County Code: 46041
- Imprecise: FALSE
- Military: FALSE
- Timezone: America/Denver (14:30 PM Monday, May 20 2024-05-20 (GMT -0600))
- Geo Point: 45.25675, -100.96018
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