ZIP Code 48189

48189 is one of Michigan's ZIP codes, delivering to addresses in Whitmore Lake, Washtenaw County.

City: Whitmore Lake
County: Washtenaw County
State: Michigan
Prefix: 481xx

Where this code sits

48189 is part of the 481xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Whitmore Lake.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48189 delivers to without sharing its boundary.

ZIP codes nearest 48189

The ZIP codes whose reference points sit closest to 48189.
ZIP code	Distance	Delivers to
ZIP code 48139	2.3 mi	Hamburg, MI
ZIP code 48143	3.4 mi	Lakeland, MI
ZIP code 48178	6.6 mi	South Lyon, MI
ZIP code 48169	6.8 mi	Pinckney, MI
ZIP code 48116	7.5 mi	Brighton, MI
ZIP code 48130	7.7 mi	Dexter, MI
ZIP code 48165	9.3 mi	New Hudson, MI
ZIP code 48105	9.4 mi	Ann Arbor, 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 48189, plotted from its record coordinates.

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

Scope ZIP code 48189. 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.