ZIP Code 48889: Sumner, MI
County: Gratiot
Coordinates: 43.30910, -84.79070
ZIP Type: Standard
Time Zone: Eastern Time (ET)
Explore detailed information for ZIP code 48889 in Sumner, MI. We include verified county details for Gratiot plus key geographic references used for mapping and logistics.
| Primary City | Sumner |
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| ZIP Code | 48889 |
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| County | Gratiot |
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| State | MI |
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| Latitude / Longitude | 43.30910, -84.79070 |
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| ZIP Type | Standard |
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| Time Zone | Eastern Time (ET) |
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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 48889 (not an exact boundary).
Geographic & Administrative Context
Coordinates for 48889 are listed as 43.30910 / -84.79070, useful for GPS and service checks in and around Sumner, MI.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 48889 for mail delivery and general location reference in
Gratiot,
MI.
This ZIP may extend beyond the city core into nearby communities within Gratiot.
Related ZIP Codes (Nearby)
Explore other postal codes near Sumner within MI.
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Frequently Asked Questions
What is the primary city for ZIP code 48889?
The primary city for this ZIP code is Sumner, located in MI.
In which county is 48889 located?
ZIP code 48889 is situated within Gratiot, MI.
What are the coordinates for 48889?
The approximate center point is 43.30910 (Latitude) and -84.79070 (Longitude).
Is ZIP code 48889 active?
This page lists ZIP 48889 as Listed based on the latest refresh date shown above.
Does ZIP 48889 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