ZIP Code 56431

56431 is one of Minnesota's ZIP codes, delivering to addresses in Aitkin, Aitkin County.

City: Aitkin
County: Aitkin County
State: Minnesota
Prefix: 564xx

Where this code sits

56431 is part of the 564xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Aitkin.

Aitkin Minnesota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 56431 delivers to without sharing its boundary.

218 Area code 218

ZIP codes nearest 56431

The ZIP codes whose reference points sit closest to 56431.
ZIP code	Distance	Delivers to
ZIP code 56444	12 mi	Deerwood, MN
ZIP code 56469	15 mi	Palisade, MN
ZIP code 56455	16 mi	Ironton, MN
ZIP code 56441	16 mi	Crosby, MN
ZIP code 55760	18 mi	Mcgregor, MN
ZIP code 56450	19 mi	Garrison, MN
ZIP code 56342	23 mi	Isle, MN
ZIP code 56350	23 mi	Mc Grath, 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 56431, plotted from its record coordinates.

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

Scope ZIP code 56431. 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.