Every ZIP code in Brown County

664xx–665xx

The complete list of Brown County, KS ZIP codes with the city each one delivers to.
ZIP code	City
66424	Everest
66425	Fairview
66434	Hiawatha
66439	Horton
66515	Morrill
66527	Powhattan
66532	Robinson

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Brown County

Area codes covering Brown County

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

Where Brown County's ZIP codes sit

Each point is the reference point of one Brown 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 Brown 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.