Leavenworth County ZIP Codes

Leavenworth County is a county of Kansas.

ZIP codes: 7
Cities & towns: 7
Area codes: 1
Land area: 463 sq mi

Every ZIP code in Leavenworth County

660xx

The complete list of Leavenworth County, KS ZIP codes with the city each one delivers to.
ZIP code	City
66007	Basehor
66020	Easton
66027	Fort Leavenworth
66043	Lansing
66048	Leavenworth
66052	Linwood
66086	Tonganoxie

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Leavenworth County

A further 1 place in Leavenworth 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 Leavenworth County

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

913 Area code 913

Where Leavenworth County's ZIP codes sit

Each point is the reference point of one Leavenworth 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 Leavenworth 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.