Marquette County ZIP Codes

Marquette County is a county of Wisconsin.

ZIP codes: 7
Cities & towns: 7
Area codes: 4
Land area: 456 sq mi

Every ZIP code in Marquette County

539xx–549xx

The complete list of Marquette County, WI ZIP codes with the city each one delivers to.
ZIP code	City
53920	Briggsville
53930	Endeavor
53949	Montello
53952	Oxford
53953	Packwaukee
53964	Westfield
54960	Neshkoro

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Marquette County

A further 2 places in Marquette 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 Marquette County

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

Where Marquette County's ZIP codes sit

Each point is the reference point of one Marquette 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 Marquette 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.