ZIP Code 57761: New Underwood, SD
County: Pennington
Coordinates: 44.08740, -102.81360
ZIP Type: Standard
Time Zone: Mountain Time (MT)
Get a reliable snapshot of the New Underwood, SD postal area 57761. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | New Underwood |
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| ZIP Code | 57761 |
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| County | Pennington |
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| State | SD |
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| Latitude / Longitude | 44.08740, -102.81360 |
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| ZIP Type | Standard |
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| Time Zone | Mountain Time (MT) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 57761 (not an exact boundary).
Geographic & Administrative Context
The geographic center of ZIP code 57761 is approximately 44.08740 (latitude) and -102.81360 (longitude). This location sits within Pennington, contributing to regional planning across SD.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57761 for mail delivery and general location reference in
Pennington,
SD.
Some addresses near New Underwood may share this ZIP due to delivery routing and local service areas.
Related ZIP Codes (Nearby)
Explore other postal codes near New Underwood within SD.
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Frequently Asked Questions
What is the primary city for ZIP code 57761?
The primary city for this ZIP code is New Underwood, located in SD.
In which county is 57761 located?
ZIP code 57761 is situated within Pennington, SD.
What are the coordinates for 57761?
The approximate center point is 44.08740 (Latitude) and -102.81360 (Longitude).
Is ZIP code 57761 active?
This page lists ZIP 57761 as Listed based on the latest refresh date shown above.
Does ZIP 57761 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08