Marion County ZIP Codes

Marion County is a county of Illinois.

ZIP codes: 11
Cities & towns: 11
Area codes: 2
Land area: 573 sq mi

Every ZIP code in Marion County

628xx

The complete list of Marion County, IL ZIP codes with the city each one delivers to.
ZIP code	City
62801	Centralia
62807	Alma
62849	Iuka
62853	Kell
62854	Kinmundy
62870	Odin
62875	Patoka
62881	Salem
62882	Sandoval
62892	Vernon
62893	Walnut Hill

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Marion County

Area codes covering Marion County

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

Where Marion County's ZIP codes sit

Each point is the reference point of one Marion 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 Marion 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.