The Chicago Cityscape API returns data about an address in Illinois or a Property Index Number (PIN) in Cook County, Illinois. Returned data can including information about elected officials, TIF districts, nearby CTA & Metra stations, and potential financial incentives for that address or PIN. The most information is returned for Chicago addresses.
Using the API requires a key which is available to certain members and can be found on your Account page.
Address Snapshot API documentation
The "Address Snapshot API" returns the same information that you get in an Address Snapshot Report.
https://www.chicagocityscape.com/api/index.php
The Address Snapshot API was previously called the TOD API.
Get a response for an address in Chicago. If the API call doesn't have coordinates, the API will automatically geocode the address. Provide coordinates using lat and lng parameters (this will also marginally speed up the response).
https://www.chicagocityscape.com/api/index.php?address=333 N Michigan Ave&city=Chicago&state=IL&key=XXX
Get a response for a PIN in Cook County. If the PIN is found but doesn't have a record in the Cook County Parcel 2019 GIS layer, then the PIN is geocoded.
https://www.chicagocityscape.com/api/index.php?pin=13364210400000&key=XXX
This API returns a GeoJSON dataset of Cook County parcels within a radius (in feet) of a WGS84 geographic coordinate, inside a bounding box passed to the API as a GeoJSON polygon, or inside or within a radius (in feet) of one of our thousands of Place Snapshots (using the slug parameter).
/* The endpoint URL...*/
https://www.chicagocityscape.com/api/parcels.php
Visit Boundaries (Places) for details on how to get GeoJSON for wards, community areas, neighborhoods, Chicago Public Schools attendance areas, and other kinds of boundaries.
- If you are using cURL to access the API and you are receiving results but unexpected results, try sending the parameters as a JSON payload, or "-d" properties, rather then encoding them in the URL.