ZIP Code 54645

54645 is one of Wisconsin's ZIP codes, delivering to addresses in Mount Sterling, Crawford County.

City: Mount Sterling
County: Crawford County
State: Wisconsin
Prefix: 546xx

Where this code sits

54645 is part of the 546xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mount Sterling.

Mount Sterling Wisconsin ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 54645 delivers to without sharing its boundary.

ZIP codes nearest 54645

The ZIP codes whose reference points sit closest to 54645.
ZIP code	Distance	Delivers to
ZIP code 54631	3.4 mi	Gays Mills, WI
ZIP code 54654	3.8 mi	Seneca, WI
ZIP code 54640	8.0 mi	Lynxville, WI
ZIP code 54628	8.1 mi	Ferryville, WI
ZIP code 54657	9.0 mi	Steuben, WI
ZIP code 54626	9.4 mi	Eastman, WI
ZIP code 54655	9.7 mi	Soldiers Grove, WI
ZIP code 54652	13 mi	Readstown, 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 54645, plotted from its record coordinates.

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

Scope ZIP code 54645. 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.