Oceana County ZIP Codes

Oceana County is a county of Michigan.

ZIP codes: 8
Cities & towns: 8
Area codes: 1
Land area: 538 sq mi

Every ZIP code in Oceana County

494xx

The complete list of Oceana County, MI ZIP codes with the city each one delivers to.
ZIP code	City
49420	Hart
49421	Hesperia
49436	Mears
49446	New Era
49449	Pentwater
49452	Rothbury
49455	Shelby
49459	Walkerville

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Oceana County

A further 1 place in Oceana 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 Oceana County

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

231 Area code 231

Where Oceana County's ZIP codes sit

Each point is the reference point of one Oceana 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 Oceana 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.