Wyandot County ZIP Codes

Wyandot County is a county of Ohio.

ZIP codes: 8
Cities & towns: 8
Area codes: 4
Land area: 407 sq mi

Every ZIP code in Wyandot County

433xx–448xx

The complete list of Wyandot County, OH ZIP codes with the city each one delivers to.
ZIP code	City
43316	Carey
43323	Harpster
43330	Kirby
43351	Upper Sandusky
43359	Wharton
44844	Mc Cutchenville
44849	Nevada
44882	Sycamore

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Wyandot County

A further 1 place in Wyandot 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 Wyandot County

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

Where Wyandot County's ZIP codes sit

Each point is the reference point of one Wyandot 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 Wyandot 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.