Cook County Leads with Transparency

The Cook County Open Data Site transformed Cook County into a world leader of transparency while adding an additional measure of accountability to its citizens. In a short amount of time, Cook County was able to achieve a comprehensive data-sharing platform allowing for agencies, citizens and developers to utilize the same web-standards in use by the City of Chicago and the State of Illinois. Over 200 datasets are now easily accesible by Cook County residents.

“Open Government will effectively break-down the information silos that limit the sharing of information and best practices throughout the different county operations. Data in a vacuum serves no functional purpose.”
Toni Preckwinkle, Board President, Cook County More…

Featured Dataset


Governor Quinn, Cook County Board President Preckwinkle and Mayor Emanuel Announce First-Ever Converged Data Site
by The Mayor’s Press Office, City of Chicago, March 21, 2012

Cook County, Ill. Hopes Open Data Will Rehab Image
by Brian Heaton, Government Technology, October 12, 2011

Preckwinkle Launches Open Data Website,
by Sebastian James, Cook County Blog, September 21, 2011

Cook County’s Open Data Portal – Sebastian James
by Adriel Hampton, Blog Talk Radio, December 11, 2011

Five open data visualizations from Cook County (IL)
by Luke Farewell, GovFresh, December 15, 2011

Why Open Data?

Video: Preckwinkle Launches Open Data Site
by Cook County, September 21, 2011