Coles County ZIP Codes

Coles County is a county of Illinois.

ZIP codes: 7
Cities & towns: 7
Area codes: 2
Land area: 508 sq mi

Every ZIP code in Coles County

619xx–624xx

The complete list of Coles County, IL ZIP codes with the city each one delivers to.
ZIP code	City
61912	Ashmore
61920	Charleston
61931	Humboldt
61938	Mattoon
61943	Oakland
62440	Lerna
62469	Trilla

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Coles County

A further 1 place in Coles 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 Coles County

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

Where Coles County's ZIP codes sit

Each point is the reference point of one Coles 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 Coles 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.