About data.cityofchicago.org

Chicago’s Data Portal 2.0 – The City of Chicago’s Data Portal is dedicated to promoting access to government data and encouraging the development of creative tools to engage and serve Chicago’s diverse community. Here you’ll find essential data presented in easy-to-use formats to help Chicagoans keep track of how their government is performing and build innovative applications to benefit residents and visitors alike.

“Data belongs to the people, and there is an enormous desire on the part of residents to participate in government and find ways to contribute. This [apps] competition will allow them to create innovative solutions and experiment with applications that can make all of our lives better.”
Mayor Rahm Emanuel, City of Chicago. more…

Featured Content

  • Webinar Watch the City of Chicago discuss their open data platform.
  • Video Case Study Watch video case studies about the City of Chicago’s use of open data.

Featured Dataset


Chicago CTO Says Senior Municipal Staff are Changing the Way Cities Work
by Nick Judd, Tech President, June 28, 2011

Mayor Rahm Emanuel Announces ‘Apps for Metro Chicago’
by Nick Judd, TechPresident, June 24 2011

Chicago puts lobbyists’ pay online
by Hal Dardick and Kristen Mack, Chicago Tribune, June 16 2011

Civic Apps

Apps for Metro Chicago
This is the first civic apps competition offering data from four governmental agencies: The City of Chicago, the Chicago Metropolitan Agency for Planning, Cook County, and the State of Illinois. learn more