Daviess County ZIP Codes

Daviess County is a county of Missouri.

ZIP codes: 9
Cities & towns: 9
Area codes: 1
Land area: 563 sq mi

Every ZIP code in Daviess County

646xx

The complete list of Daviess County, MO ZIP codes with the city each one delivers to.
ZIP code	City
64620	Altamont
64636	Coffey
64640	Gallatin
64642	Gilman City
64647	Jameson
64648	Jamesport
64654	Lock Springs
64670	Pattonsburg
64689	Winston

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Daviess County

Area codes covering Daviess 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 Daviess County's ZIP codes sit

Each point is the reference point of one Daviess 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 Daviess 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.