ZIP Code 54643

54643 is one of Wisconsin's ZIP codes, delivering to addresses in Millston, Jackson County.

City: Millston
County: Jackson County
State: Wisconsin
Prefix: 546xx

Where this code sits

54643 is part of the 546xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Millston.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 54643 delivers to without sharing its boundary.

ZIP codes nearest 54643

The ZIP codes whose reference points sit closest to 54643.
ZIP code	Distance	Delivers to
ZIP code 54666	7.2 mi	Warrens, WI
ZIP code 54615	12 mi	Black River Falls, WI
ZIP code 54620	12 mi	Cataract, WI
ZIP code 54662	13 mi	Tunnel City, WI
ZIP code 54660	16 mi	Tomah, WI
ZIP code 54641	17 mi	Mather, WI
ZIP code 54656	18 mi	Sparta, WI
ZIP code 54754	19 mi	Merrillan, WI

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 54643, plotted from its record coordinates.

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

Scope ZIP code 54643. 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.