ZIP Code 57440: Frankfort, SD
County: Spink
Coordinates: 44.80840, -98.29350
ZIP Type: Standard
Time Zone: Central Time (CT)
Explore detailed information for ZIP code 57440 in Frankfort, SD. We include verified county details for Spink plus key geographic references used for mapping and logistics.
| Primary City | Frankfort |
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| ZIP Code | 57440 |
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| County | Spink |
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| State | SD |
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| Latitude / Longitude | 44.80840, -98.29350 |
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| ZIP Type | Standard |
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| Time Zone | Central Time (CT) |
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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 57440 (not an exact boundary).
Geographic & Administrative Context
The geographic center of ZIP code 57440 is approximately 44.80840 (latitude) and -98.29350 (longitude). This location sits within Spink, contributing to regional planning across SD.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57440 for mail delivery and general location reference in
Spink,
SD.
This ZIP may extend beyond the city core into nearby communities within Spink.
Related ZIP Codes (Nearby)
Explore other postal codes near Frankfort within SD.
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Frequently Asked Questions
What is the primary city for ZIP code 57440?
The primary city for this ZIP code is Frankfort, located in SD.
In which county is 57440 located?
ZIP code 57440 is situated within Spink, SD.
What are the coordinates for 57440?
The approximate center point is 44.80840 (Latitude) and -98.29350 (Longitude).
Is ZIP code 57440 active?
This page lists ZIP 57440 as Listed based on the latest refresh date shown above.
Does ZIP 57440 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