ZIP Code 55921

55921 is one of Minnesota's ZIP codes, delivering to addresses in Caledonia, Houston County.

City: Caledonia
County: Houston County
State: Minnesota
Prefix: 559xx

Where this code sits

55921 is part of the 559xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Caledonia.

Caledonia Minnesota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 55921 delivers to without sharing its boundary.

ZIP codes nearest 55921

The ZIP codes whose reference points sit closest to 55921.
ZIP code	Distance	Delivers to
ZIP code 55931	7.9 mi	Eitzen, MN
ZIP code 55974	8.7 mi	Spring Grove, MN
ZIP code 55919	9.7 mi	Brownsville, MN
ZIP code 55941	11 mi	Hokah, MN
ZIP code 55943	12 mi	Houston, MN
ZIP code 52140	13 mi	Dorchester, IA
ZIP code 52160	13 mi	New Albin, IA
ZIP code 52149	15 mi	Highlandville, IA

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 55921, plotted from its record coordinates.

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

Scope ZIP code 55921. 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.