ZIP Code 48439

48439 is one of Michigan's ZIP codes, delivering to addresses in Grand Blanc, Genesee County.

City: Grand Blanc
County: Genesee County
State: Michigan
Prefix: 484xx

Where this code sits

48439 is part of the 484xx range, the group of codes handled by one mail processing centre. Grand Blanc is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Grand Blanc page.

Grand Blanc Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48439 delivers to without sharing its boundary.

810 Area code 810

ZIP codes nearest 48439

The ZIP codes whose reference points sit closest to 48439.
ZIP code	Distance	Delivers to
ZIP code 48480	0.9 mi	Grand Blanc, MI
ZIP code 48529	3.7 mi	Burton, MI
ZIP code 48519	4.0 mi	Burton, MI
ZIP code 48411	4.6 mi	Atlas, MI
ZIP code 48552	5.6 mi	Flint, MI
ZIP code 48551	5.6 mi	Flint, MI
ZIP code 48553	5.7 mi	Flint, MI
ZIP code 48531	6.1 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 48439, plotted from its record coordinates.

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

Scope ZIP code 48439. 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.