US location post office
ZIP Code 57761
- Zip Code: 57761
- Type: Standard
- Official USPS city name: New Underwood
- Official USPS State Code: SD
- Official State Name: South Dakota
- ZCTA: TRUE
- Population: 1589.0
- Density: 1.1
- Primary Official County Code: 46103
- Primary Official County Name: Pennington
- Official County Name: Pennington| Meade
- Official County Code: 46103| 46093
- Imprecise: FALSE
- Military: FALSE
- Timezone: America/Denver (08:21 AM Monday, May 20 2024-05-20 (GMT -0600))
- Geo Point: 44.22941, -102.73762
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