Postal boundaries

Iowa ZIP code boundaries

  • 865 boundary areas included
  • 9 data fields with sample values
  • Part of the USA ZIP code boundaries collection for Iowa
Preview of Iowa ZIP code boundaries map
Enlarged preview of Iowa ZIP code boundaries map

Iowa ZIP code boundaries Data Sample

Below is a sample of some of the fields included in this GIS file. These columns can be visualized in QGIS, Power BI, Leaflet, and other mapping or analytics tools supporting GeoJSON.

Field Name Sample Data
fid 21900, 21901, 21902
ZIP 51040, 51501, 51510
STATE IA, IA, IA
ZIP4 5104, 5150, 5151
ZIP2 51, 51, 51
ZIP3 510, 515, 515
PO_NAME Onawa, Council Bluffs, Carter Lake
area_km 468.9, 68.7, 4.6
CARTO_REGION State, State, State

Dataset information

About the Iowa ZIP code boundaries GeoJSON file

  • Map ID: usa_zip_boundaries_ia
  • Collection: USA ZIP code boundaries
  • Region: Iowa
  • Boundary areas: 865
  • Attribute fields: 9
  • Preview generated: 9 August 2026

This postal boundary dataset contains 865 boundary areas and 9 data fields from the USA ZIP code boundaries collection for Iowa.

£125.00
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Note on Compatibility

We strive to provide universally compatible GeoJSON files, but sometimes a mapping application may require a specific coordinate reference system (projection) or particular data fields. If your file doesn't load or display as expected, please get in touch. We can reproject the file, add additional data columns to the polygons, or even develop a custom mapping tool—whether simple or complex—to ensure your data visualizes correctly. We won't rest until everything works just the way you need!

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