ZIP Code 54856

54856 is one of Wisconsin's ZIP codes, delivering to addresses in Mason, Bayfield County.

City: Mason
County: Bayfield County
State: Wisconsin
Prefix: 548xx

Where this code sits

54856 is part of the 548xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mason.

Mason Wisconsin ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 54856 delivers to without sharing its boundary.

ZIP codes nearest 54856

The ZIP codes whose reference points sit closest to 54856.
ZIP code	Distance	Delivers to
ZIP code 54816	5.0 mi	Benoit, WI
ZIP code 54839	5.8 mi	Grand View, WI
ZIP code 54832	12 mi	Drummond, WI
ZIP code 54855	14 mi	Marengo, WI
ZIP code 54821	16 mi	Cable, WI
ZIP code 54847	17 mi	Iron River, WI
ZIP code 54846	19 mi	High Bridge, WI
ZIP code 54891	20 mi	Washburn, 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 54856, plotted from its record coordinates.

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

Scope ZIP code 54856. 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.