Warren County ZIP Codes

Warren County is a county of Iowa.

ZIP codes: 13
Cities & towns: 13
Area codes: 2
Land area: 570 sq mi

Every ZIP code in Warren County

500xx–502xx

The complete list of Warren County, IA ZIP codes with the city each one delivers to.
ZIP code	City
50001	Ackworth
50047	Carlisle
50061	Cumming
50118	Hartford
50125	Indianola
50139	Lacona
50145	Liberty Center
50160	Martensdale
50166	Milo
50210	New Virginia
50211	Norwalk
50229	Prole
50241	Saint Marys

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Warren County

A further 3 places in Warren County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Warren County

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

Where Warren County's ZIP codes sit

Each point is the reference point of one Warren 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 Warren 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.