Clinton County ZIP Codes

Clinton County is a county of Illinois.

ZIP codes: 13
Cities & towns: 13
Area codes: 2
Land area: 474 sq mi

Every ZIP code in Clinton County

622xx

The complete list of Clinton County, IL ZIP codes with the city each one delivers to.
ZIP code	City
62215	Albers
62216	Aviston
62218	Bartelso
62219	Beckemeyer
62230	Breese
62231	Carlyle
62245	Germantown
62250	Hoffman
62252	Huey
62253	Keyesport
62265	New Baden
62266	New Memphis
62293	Trenton

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Clinton County

A further 1 place in Clinton 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 Clinton County

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

Where Clinton County's ZIP codes sit

Each point is the reference point of one Clinton 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 Clinton 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.