Riley County ZIP Codes

Riley County is a county of Kansas.

ZIP codes: 8
Cities & towns: 5
Area codes: 1
Land area: 610 sq mi

Every ZIP code in Riley County

664xx–665xx

The complete list of Riley County, KS ZIP codes with the city each one delivers to.
ZIP code	City
66449	Leonardville
66502	Manhattan
66503	Manhattan
66505	Manhattan
66506	Manhattan
66517	Ogden
66531	Riley
66554	Randolph

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Riley County

Area codes covering Riley County

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

785 Area code 785

Where Riley County's ZIP codes sit

Each point is the reference point of one Riley 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 Riley 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.