Mille Lacs County ZIP Codes

Mille Lacs County is a county of Minnesota.

ZIP codes: 8
Cities & towns: 8
Area codes: 3
Land area: 572 sq mi

Every ZIP code in Mille Lacs County

553xx–563xx

The complete list of Mille Lacs County, MN ZIP codes with the city each one delivers to.
ZIP code	City
55371	Princeton
56313	Bock
56330	Foreston
56342	Isle
56353	Milaca
56359	Onamia
56363	Pease
56386	Wahkon

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Mille Lacs County codes above are listed without a column we would have to invent.

Cities and towns in Mille Lacs County

Area codes covering Mille Lacs County

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

Where Mille Lacs County's ZIP codes sit

Each point is the reference point of one Mille Lacs 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 Mille Lacs 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.