ZIP Code 48166

48166 is one of Michigan's ZIP codes, delivering to addresses in Newport, Monroe County.

City: Newport
County: Monroe County
State: Michigan
Prefix: 481xx

Where this code sits

48166 is part of the 481xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Newport.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 48166 delivers to without sharing its boundary.

ZIP codes nearest 48166

The ZIP codes whose reference points sit closest to 48166.
ZIP code	Distance	Delivers to
ZIP code 48179	6.0 mi	South Rockwood, MI
ZIP code 48117	7.2 mi	Carleton, MI
ZIP code 48173	7.5 mi	Rockwood, MI
ZIP code 48134	8.9 mi	Flat Rock, MI
ZIP code 48162	9.1 mi	Monroe, MI
ZIP code 48161	11 mi	Monroe, MI
ZIP code 48183	12 mi	Trenton, MI
ZIP code 48164	12 mi	New Boston, 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 48166, plotted from its record coordinates.

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

Scope ZIP code 48166. 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.