Every ZIP code in Floyd County

504xx–506xx

The complete list of Floyd County, IA ZIP codes with the city each one delivers to.
ZIP code	City
50435	Floyd
50458	Nora Springs
50468	Rockford
50471	Rudd
50616	Charles City
50620	Colwell
50653	Marble Rock

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Floyd County

Area codes covering Floyd County

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

Where Floyd County's ZIP codes sit

Each point is the reference point of one Floyd 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 Floyd 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.