Morton County ZIP Codes

Morton County is a county of North Dakota.

ZIP codes: 7
Cities & towns: 7
Area codes: 1
Land area: 1,926 sq mi

Every ZIP code in Morton County

585xx–586xx

The complete list of Morton County, ND ZIP codes with the city each one delivers to.
ZIP code	City
58520	Almont
58535	Flasher
58554	Mandan
58563	New Salem
58566	Saint Anthony
58631	Glen Ullin
58638	Hebron

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Morton County

A further 1 place in Morton County appears in the postal source without a page of its own; its codes are in the table above and each one links to its own page.

Area codes covering Morton County

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

701 Area code 701

Where Morton County's ZIP codes sit

Each point is the reference point of one Morton 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 Morton 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.