Gratiot County ZIP Codes

Gratiot County is a county of Michigan.

ZIP codes: 15
Cities & towns: 15
Area codes: 2
Land area: 568 sq mi

Every ZIP code in Gratiot County

486xx–488xx

The complete list of Gratiot County, MI ZIP codes with the city each one delivers to.
ZIP code	City
48615	Breckenridge
48662	Wheeler
48801	Alma
48806	Ashley
48807	Bannister
48830	Elm Hall
48832	Elwell
48847	Ithaca
48856	Middleton
48862	North Star
48871	Perrinton
48874	Pompeii
48877	Riverdale
48880	Saint Louis
48889	Sumner

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Gratiot County

A further 10 places in Gratiot 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 Gratiot County

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

Where Gratiot County's ZIP codes sit

Each point is the reference point of one Gratiot 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 Gratiot 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.