Aitkin County ZIP Codes

Aitkin County is a county of Minnesota.

ZIP codes: 8
Cities & towns: 8
Area codes: 2
Land area: 1,821 sq mi

Every ZIP code in Aitkin County

557xx–564xx

The complete list of Aitkin County, MN ZIP codes with the city each one delivers to.
ZIP code	City
55748	Hill City
55752	Jacobson
55760	Mcgregor
55785	Swatara
55787	Tamarack
56350	Mc Grath
56431	Aitkin
56469	Palisade

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Aitkin County codes above are listed without a column we would have to invent.

Cities and towns in Aitkin County

A further 3 places in Aitkin County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Aitkin County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Aitkin County's ZIP codes sit

Each point is the reference point of one Aitkin County ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

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

Scope every ZIP code recorded in Aitkin County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.