dev.cityofchicago.orgCity of Chicago Developers

Menu Home Resources Bus, Trains & Alerts ClearPath API DIVVY API GTFS Health Atlas API Lead Safe Open 311 OpenGrid Dev Docs Plenario Open Data Portal Visit Portal API documentation Projects GitHub Blog Connect to transit data API Docs Open data for researchers & developers Visit Portal View API Docs Open 311 APIs to request city services Open311 API Docs Service Tracker Develop your city Technology tools you can use City of Chicago has multiple technology tools that you can use to connect residents to the city. Robust open data can inform you of recent activity anywhere in the city, whether it is crime, licenses, or arriving buses. Some of our APIs also let you communicate to city officials, such as the Open311 API that lets you open service requests or the ClearPath API that lets users submit tips or see upcoming community meetings. This page connects you to the documentation to help developers create tools for their neighbors. Transit Authority APIs Track the city buses, trains, advisories, and scheduled stops. See documentation on Chicago Transit Authority's Train Tracker , Bus Tracker , customer alerts and scheduled stops (GTFS) at CTA's Developer Center. Open311 Service Tracker Develop applications that can open and close 311 requests for services in the city ranging from filling potholes to fixing broken streetlights. Over a dozen services can be requested using the API that follows the Open311 API specification used by a dozen other cities. Open Data Portal API Chicago's Open Data Portal contains 600 data sets ranging from crimes to beach water quality. The portal is hosted by Socrata, which has a robust API to quickly retrieve and query data. The Socrata Open Data API (SODA) documentation provides a great overview of the API with plenty of examples and SDK's for a handful of popular programming languages. DIVVY Bike Stations DIVVY bikeshare program is the largest in the world. This API endpoint provides the availability of bicycles at each DIVVY station across the city. It is updated every minute and great for those who want to build a DIVVY app. Historical DIVVY bike availability and bicycle trips are available on the Open Data Portal . Chicago Police APIs A set of beta APIs that allows developers to build applications that can submit anonymous tips, display mugshots, list the most wanted individuals, and a list of community events where you can meet your local community police captain. Maintained by the Chicago Police Department. We love Collaboration Visit the City of Chicago's GitHub page to see over a dozen open source projects maintained by the city. Many of sites and tools are used by residents every day and often used by other cities or researchers. You don't only help your city, but you also help your neighbors and other people. Contribute Featured Project Health Atlas Chicago Health Atlas let's the public review, explore and compare health-related data over time and across communities. It displays over 160 health and health-related indicators provided by the city, non-profits, state, and federal data. Take a look at the existing issues for ideas or suggest your own. Learn more Chicago Residents Data sets on Open Data Portal Open311 API Calls Open Data page views © 2017 City of Chicago . Licensed under Creative Commons Attribution 4.0 . Disclaimer Site credits Privacy policy Resources Bus, Trains & Alerts ClearPath API DIVVY API GTFS Health Atlas API Lead Safe Open 311 OpenGrid Dev Docs Plenario Visit Portal API documentation Developer Blog Additional 2019 Trips Added to Transportation Network Providers - Trips Dataset TNP Trips Correction - November 2019 - Complete Changes to the COPA Datasets Update Timeline for Transportation Network Provider Datasets Street Sweeping Schedule 2020 Delayed Contact us...