ZIP Code 52101

52101 is one of Iowa's ZIP codes, delivering to addresses in Decorah, Winneshiek County.

City: Decorah
County: Winneshiek County
State: Iowa
Prefix: 521xx

Where this code sits

52101 is part of the 521xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Decorah.

Decorah Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 52101 delivers to without sharing its boundary.

563 Area code 563

ZIP codes nearest 52101

The ZIP codes whose reference points sit closest to 52101.
ZIP code	Distance	Delivers to
ZIP code 52132	11 mi	Calmar, IA
ZIP code 52165	11 mi	Ridgeway, IA
ZIP code 52149	11 mi	Highlandville, IA
ZIP code 52168	11 mi	Spillville, IA
ZIP code 52161	13 mi	Ossian, IA
ZIP code 52144	14 mi	Fort Atkinson, IA
ZIP code 52133	14 mi	Castalia, IA
ZIP code 55954	15 mi	Mabel, MN

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 52101, plotted from its record coordinates.

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

Scope ZIP code 52101. 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.