Kalkaska County ZIP Codes

Kalkaska County is a county of Michigan.

ZIP codes: 3
Cities & towns: 3
Area codes: 1
Land area: 560 sq mi

Every ZIP code in Kalkaska County

496xx

The complete list of Kalkaska County, MI ZIP codes with the city each one delivers to.
ZIP code	City
49646	Kalkaska
49676	Rapid City
49680	South Boardman

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Kalkaska County

A further 2 places in Kalkaska 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 Kalkaska 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 Kalkaska County's ZIP codes sit

Each point is the reference point of one Kalkaska 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 Kalkaska 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.