Isanti County ZIP Codes

Isanti County is a county of Minnesota.

ZIP codes: 6
Cities & towns: 6
Area codes: 3
Land area: 436 sq mi

Every ZIP code in Isanti County

550xx

The complete list of Isanti County, MN ZIP codes with the city each one delivers to.
ZIP code	City
55006	Braham
55008	Cambridge
55017	Dalbo
55029	Grandy
55040	Isanti
55080	Stanchfield

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Isanti County

A further 3 places in Isanti 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 Isanti County

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

Where Isanti County's ZIP codes sit

Each point is the reference point of one Isanti 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 Isanti 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.