ZIP Code 48877

48877 is one of Michigan's ZIP codes, delivering to addresses in Riverdale, Gratiot County.

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

Where this code sits

48877 is part of the 488xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Riverdale.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48877 delivers to without sharing its boundary.

989 Area code 989

ZIP codes nearest 48877

The ZIP codes whose reference points sit closest to 48877.
ZIP code	Distance	Delivers to
ZIP code 48830	2.6 mi	Elm Hall, MI
ZIP code 48891	3.4 mi	Vestaburg, MI
ZIP code 48832	4.1 mi	Elwell, MI
ZIP code 48812	6.7 mi	Cedar Lake, MI
ZIP code 48889	6.9 mi	Sumner, MI
ZIP code 48896	8.9 mi	Winn, MI
ZIP code 48801	9.1 mi	Alma, MI
ZIP code 48829	9.3 mi	Edmore, 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 48877, plotted from its record coordinates.

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

Scope ZIP code 48877. 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.