Every ZIP code in Dickinson County

513xx

The complete list of Dickinson County, IA ZIP codes with the city each one delivers to.
ZIP code	City
51331	Arnolds Park
51347	Lake Park
51351	Milford
51355	Okoboji
51360	Spirit Lake
51363	Superior
51364	Terril

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Dickinson County

Area codes covering Dickinson County

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

Where Dickinson County's ZIP codes sit

Each point is the reference point of one Dickinson 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 Dickinson 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.