ZIP Code 55920

55920 is one of Minnesota's ZIP codes, delivering to addresses in Byron, Olmsted County.

City: Byron
County: Olmsted County
State: Minnesota
Prefix: 559xx

Where this code sits

55920 is part of the 559xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Byron.

Byron Minnesota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 55920 delivers to without sharing its boundary.

ZIP codes nearest 55920

The ZIP codes whose reference points sit closest to 55920.
ZIP code	Distance	Delivers to
ZIP code 55903	5.3 mi	Rochester, MN
ZIP code 55944	5.8 mi	Kasson, MN
ZIP code 55955	6.7 mi	Mantorville, MN
ZIP code 55901	7.1 mi	Rochester, MN
ZIP code 55902	7.7 mi	Rochester, MN
ZIP code 55905	8.2 mi	Rochester, MN
ZIP code 55960	11 mi	Oronoco, MN
ZIP code 55927	11 mi	Dodge Center, 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 55920, plotted from its record coordinates.

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

Scope ZIP code 55920. 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.