ZIP Code 48458

48458 is one of Michigan's ZIP codes, delivering to addresses in Mount Morris, Genesee County.

City: Mount Morris
County: Genesee County
State: Michigan
Prefix: 484xx

Where this code sits

48458 is part of the 484xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mount Morris.

Mount Morris Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48458 delivers to without sharing its boundary.

810 Area code 810

ZIP codes nearest 48458

The ZIP codes whose reference points sit closest to 48458.
ZIP code	Distance	Delivers to
ZIP code 48505	3.7 mi	Flint, MI
ZIP code 48437	3.7 mi	Genesee, MI
ZIP code 48506	4.6 mi	Flint, MI
ZIP code 48420	4.6 mi	Clio, MI
ZIP code 48504	5.1 mi	Flint, MI
ZIP code 48557	5.3 mi	Flint, MI
ZIP code 48550	5.6 mi	Flint, MI
ZIP code 48556	6.2 mi	Flint, 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 48458, plotted from its record coordinates.

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

Scope ZIP code 48458. 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.