ZIP Code 54512

54512 is one of Wisconsin's ZIP codes, delivering to addresses in Boulder Junction, Vilas County.

City: Boulder Junction
County: Vilas County
State: Wisconsin
Prefix: 545xx

Where this code sits

54512 is part of the 545xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Boulder Junction.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 54512 delivers to without sharing its boundary.

ZIP codes nearest 54512

The ZIP codes whose reference points sit closest to 54512.
ZIP code	Distance	Delivers to
ZIP code 54561	7.8 mi	Star Lake, WI
ZIP code 54557	8.0 mi	Presque Isle, WI
ZIP code 54560	10 mi	Sayner, WI
ZIP code 54545	11 mi	Manitowish Waters, WI
ZIP code 54568	14 mi	Woodruff, WI
ZIP code 54558	15 mi	Saint Germain, WI
ZIP code 54540	15 mi	Land O Lakes, WI
ZIP code 54538	16 mi	Lac Du Flambeau, 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 54512, plotted from its record coordinates.

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

Scope ZIP code 54512. 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.