Every ZIP code in Shelby County

514xx–515xx

The complete list of Shelby County, IA ZIP codes with the city each one delivers to.
ZIP code	City
51446	Irwin
51447	Kirkman
51527	Defiance
51530	Earling
51531	Elk Horn
51537	Harlan
51562	Panama
51565	Portsmouth
51578	Westphalia

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Shelby County

Area codes covering Shelby County

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

Where Shelby County's ZIP codes sit

Each point is the reference point of one Shelby 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 Shelby 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.