ZIP Code 54234

54234 is one of Wisconsin's ZIP codes, delivering to addresses in Sister Bay, Door County.

City: Sister Bay
County: Door County
State: Wisconsin
Prefix: 542xx

Where this code sits

54234 is part of the 542xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sister Bay.

Sister Bay Wisconsin ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 54234 delivers to without sharing its boundary.

ZIP codes nearest 54234

The ZIP codes whose reference points sit closest to 54234.
ZIP code	Distance	Delivers to
ZIP code 54211	3.4 mi	Ephraim, WI
ZIP code 54210	5.7 mi	Ellison Bay, WI
ZIP code 54212	6.7 mi	Fish Creek, WI
ZIP code 54202	9.4 mi	Baileys Harbor, WI
ZIP code 54209	15 mi	Egg Harbor, WI
ZIP code 54246	17 mi	Washington Island, WI
ZIP code 49893	24 mi	Wallace, MI
ZIP code 49858	25 mi	Menominee, 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 54234, plotted from its record coordinates.

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

Scope ZIP code 54234. 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.