Datasets
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Deprecating Housing and Economic Development Payment Receipts Dataset - 8/4/2020
Announcement of depreciating Housing and Economic Development Payment Receipts Dataset. -
COVID-19 Cases, Tests, and Deaths by ZIP Code - Historical
NOTE: This dataset has been retired and marked as historical-only. Only Chicago residents are included based on the home ZIP Code as provided by the medical provider. If a ZIP... -
Neighborhoods_2012b
Neighborhood boundaries in Chicago, as developed by the Office of Tourism. These boundaries are approximate and names are not official. The data can be viewed on the Chicago... -
Libraries - 2026 Holds Filled by Location
This data is for materials pulled to fulfill patron holds. Chicago Public Library consists of the Harold Washington Library Center, Sulzer, Legler and Woodson regional libraries... -
TIF and Financial Incentive Dataset Releases and Changes - 2/11/2020
Announcement of TIF and Financial Incentive Dataset data change. -
Building Permits Dataset Changes - 7/9/2019
Changes made to building permits dataset. -
Libraries - 2026 WiFi Usage
The Chicago Public Library offers free WiFi at all locations. Chicago Public Library consists of the Harold Washington Library Center, Sulzer, Legler and Woodson regional... -
CTA-L-Rail-Stations-Shapefile
Point data representing location of CTA Rail Station. To view or use these files, compression software and special GIS software, such as ESRI ArcGIS is required. Projected... -
Financial Incentive Projects - TIF Works
TIFWorks data includes all projects that have been completed and received a grant payment since January, 2011. TIFWorks stimulates business success by funding workforce-training... -
Libraries - 2026 Computer Sessions by Location
he Chicago Public Library offers one-hour computer sessions and 15-minute computer sessions. Chicago Public Library consists of the Harold Washington Library Center, Sulzer,... -
311 Service Requests - Tree Trims - Historical
As described in https://data.cityofchicago.org/stories/s/311-Dataset-Changes-12-11-2018/d7nq-5g7t, the function of this dataset was replaced by... -
COVID-19 Wastewater Detection - Historical
As described in https://data.cityofchicago.org/stories/s/sihu-d8va, the function of this dataset was replaced by https://data.cityofchicago.org/d/4tzt-ir6h. This dataset is... -
Red Light & Speed Camera Violations - 3/10/2025 - Resolved
Explanation of why the datasets were not updating. The problem has been fixed. -
Change Notice: Respiratory Virus Wastewater Surveillance Dataset - 1/29/2026
Upcoming change to the Respiratory Virus Wastewater Surveillance Dataset. -
COVID-19 Daily Testing - By Person - Historical
This dataset is historical only and ends at 5/7/2021. For more information, please see http://dev.cityofchicago.org/open%20data/data%20portal/2021/05/04/covid-19-testing-by-... -
CTA - Ridership - 'L' Station Entries - Monthly Day-Type Averages & Totals
This dataset lists monthly station entry averages, by day type (Weekday, Saturday or Sunday/Holiday), as well as monthly totals, beginning in 2001. Note that some stations (such... -
311 Service Requests - Alley Lights Out - Historical
As described in https://data.cityofchicago.org/stories/s/311-Dataset-Changes-12-11-2018/d7nq-5g7t, the function of this dataset was replaced by... -
Financial Incentive Projects - Neighborhood Opportunity Fund (NOF) Small
Neighborhood Opportunity Fund, Small Project data includes all projects that have received a final grant payment. Small Projects may have grants up to $250,000 and must be... -
COVID-Like Illness (CLI) and COVID-19 Diagnosis Emergency Department Visits - Historical
NOTE: This dataset is no longer being updated but is being kept for historical reference. For current data on respiratory illness visits and respiratory laboratory testing data... -
CTA - Bus Turnaround - kml
CTA Bus Turnarounds – point data representing locations of all bus turnarounds that are not located at Rail Stations. Projected Coordinate System:...