Holt County ZIP Codes

Holt County is a county of Missouri.

ZIP codes: 5
Cities & towns: 5
Area codes: 1
Land area: 463 sq mi

Every ZIP code in Holt County

644xx

The complete list of Holt County, MO ZIP codes with the city each one delivers to.
ZIP code	City
64437	Craig
64451	Forest City
64466	Maitland
64470	Mound City
64473	Oregon

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Holt County

Area codes covering Holt County

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

660 Area code 660

Where Holt County's ZIP codes sit

Each point is the reference point of one Holt 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 Holt 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.