ZIP Code 48178

48178 is one of Michigan's ZIP codes, delivering to addresses in South Lyon, Oakland County.

City: South Lyon
County: Oakland County
State: Michigan
Prefix: 481xx

Where this code sits

48178 is part of the 481xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to South Lyon.

South Lyon Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48178 delivers to without sharing its boundary.

ZIP codes nearest 48178

The ZIP codes whose reference points sit closest to 48178.
ZIP code	Distance	Delivers to
ZIP code 48165	3.7 mi	New Hudson, MI
ZIP code 48175	5.4 mi	Salem, MI
ZIP code 48189	6.6 mi	Whitmore Lake, MI
ZIP code 48374	7.1 mi	Novi, MI
ZIP code 48139	7.9 mi	Hamburg, MI
ZIP code 48116	8.1 mi	Brighton, MI
ZIP code 48393	8.5 mi	Wixom, MI
ZIP code 48168	8.9 mi	Northville, 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 48178, plotted from its record coordinates.

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

Scope ZIP code 48178. 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.