ZIP Code 48889

48889 is one of Michigan's ZIP codes, delivering to addresses in Sumner, Gratiot County.

City: Sumner
County: Gratiot County
State: Michigan
Prefix: 488xx

Where this code sits

48889 is part of the 488xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sumner.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48889 delivers to without sharing its boundary.

989 Area code 989

ZIP codes nearest 48889

The ZIP codes whose reference points sit closest to 48889.
ZIP code	Distance	Delivers to
ZIP code 48830	4.4 mi	Elm Hall, MI
ZIP code 48818	6.3 mi	Crystal, MI
ZIP code 48877	6.9 mi	Riverdale, MI
ZIP code 48832	7.1 mi	Elwell, MI
ZIP code 48891	8.0 mi	Vestaburg, MI
ZIP code 48801	8.1 mi	Alma, MI
ZIP code 48847	9.3 mi	Ithaca, MI
ZIP code 48856	9.9 mi	Middleton, MI

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 48889, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 48889. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.