Every ZIP code in Boone County

500xx–502xx

The complete list of Boone County, IA ZIP codes with the city each one delivers to.
ZIP code	City
50031	Beaver
50036	Boone
50037	Boone
50040	Boxholm
50099	Boone
50152	Luther
50156	Madrid
50212	Ogden
50223	Pilot Mound

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Boone County

Area codes covering Boone County

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

Where Boone County's ZIP codes sit

Each point is the reference point of one Boone 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 Boone 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.