ZIP Code 48321

48321 is one of Michigan's ZIP codes, delivering to addresses in Auburn Hills, Oakland County.

City

Auburn Hills

County

Oakland County

State

Michigan

Prefix

483xx

Where this code sits

48321 is part of the 483xx range, the group of codes handled by one mail processing centre. Auburn Hills is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Auburn Hills page.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48321 delivers to without sharing its boundary.

ZIP codes nearest 48321

The ZIP codes whose reference points sit closest to 48321.
ZIP code	Distance	Delivers to
ZIP code 48325	0.0 mi	West Bloomfield, MI
ZIP code 48347	0.0 mi	Clarkston, MI
ZIP code 48330	1.6 mi	Drayton Plains, MI
ZIP code 48327	1.6 mi	Waterford, MI
ZIP code 48329	1.9 mi	Waterford, MI
ZIP code 48328	2.0 mi	Waterford, MI
ZIP code 48320	4.2 mi	Keego Harbor, MI
ZIP code 48387	4.4 mi	Union Lake, 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 48321, plotted from its record coordinates.

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

Scope ZIP code 48321. 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.