ZIP Code 48503

48503 is one of Michigan's ZIP codes, delivering to addresses in Flint, Genesee County.

City: Flint
County: Genesee County
State: Michigan
Prefix: 485xx

Where this code sits

48503 is part of the 485xx range, the group of codes handled by one mail processing centre. Flint is served by 17 ZIP codes in total; the full list, with the county each falls in, is on the Flint page.

Flint Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48503 delivers to without sharing its boundary.

810 Area code 810

ZIP codes nearest 48503

The ZIP codes whose reference points sit closest to 48503.
ZIP code	Distance	Delivers to
ZIP code 48502	0.2 mi	Flint, MI
ZIP code 48531	0.7 mi	Flint, MI
ZIP code 48555	1.0 mi	Flint, MI
ZIP code 48550	1.5 mi	Flint, MI
ZIP code 48551	2.6 mi	Flint, MI
ZIP code 48552	2.6 mi	Flint, MI
ZIP code 48556	2.7 mi	Flint, MI
ZIP code 48529	3.0 mi	Burton, 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 48503, plotted from its record coordinates.

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

Scope ZIP code 48503. 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.