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City dataMaps & Geospatial
Boundaries - ZIP Codes
Published by City of Chicago · Updated 04/28/2025
- Last updated
- 04/28/2025
- First published 09/26/2013
- Update frequency
- Not listed
- Formats
- 4
- CSV, JSON, GeoJSON
- Coverage
- Chicago
- City in Illinois
About this dataset
ZIP Code boundaries in Chicago.
This dataset is in a format for spatial datasets that is inherently tabular but allows for a map as a derived view. Please click the indicated link below for such a map.
To export the data in either tabular or geographic format, please use the Export button on this dataset.
Files and access
Links open the official government source
- CSV downloaddata.cityofchicago.orgCSV
- JSON (SODA API)data.cityofchicago.orgJSON
- GeoJSONdata.cityofchicago.orgGeoJSON
- XMLdata.cityofchicago.orgXML
API endpoint: https://data.cityofchicago.org/resource/unjd-c2ca.json
Links open outside websites we do not control.
Frequently asked questions
- Who publishes Boundaries - ZIP Codes?
- City of Chicago publishes this dataset on Chicago Data Portal.
- How often is it updated?
- The publisher does not list a schedule. The last update was on 04/28/2025.
- How do I download it?
- It is available as CSV, JSON, GeoJSON, XML. Use the links in Files and access, which open the official government source.
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- Boundaries: US Zip CodesCity of AustinThe City of Austin provides this zip code dataset for general use, designed to support a variety of research and analysis needs. Please note that while we facilitate access to this data, the dataset is owned and produced by the United States Postal Service (USCSVJSONGeoJSONXMLUpdated 10/29/2026As needed
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Where this catalog comes from
- Data.gov CatalogU.S. General Services Administration
- State and local open data portalsSocrata Discovery API
- State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
- Government ArcGIS Hub sitesCity and county GIS data
Catalog checked 10/24/2026
We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.
Source: Chicago Data Portal and Data.gov · Last updated 10/24/2026 · Listing only; the data stays with the publisher
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