Oconto County ZIP Codes

Oconto County is a county of Wisconsin.

ZIP codes: 11
Cities & towns: 11
Area codes: 4
Land area: 997 sq mi

Every ZIP code in Oconto County

541xx

The complete list of Oconto County, WI ZIP codes with the city each one delivers to.
ZIP code	City
54101	Abrams
54124	Gillett
54138	Lakewood
54139	Lena
54141	Little Suamico
54149	Mountain
54153	Oconto
54154	Oconto Falls
54171	Sobieski
54174	Suring
54175	Townsend

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Oconto County

A further 6 places in Oconto 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 Oconto County

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

Where Oconto County's ZIP codes sit

Each point is the reference point of one Oconto 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 Oconto 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.