View or download voter registration statistics and download the street index of suburban Cook County.
Download precinct-level election results. Files are available as .zip Excel spreadsheets.
View comparative election turnout over the last 25 years.
During Early Voting, real-time turnout is available by site. An archive of Early Voting turnout data is available here.
The Clerk's office produces post-election reports after elections in even-numbered years. In addition to complete Cook County results, these reports include analysis of close races, historical comparisons and turnout maps. Download reports:
- April 4, 2017
- November 8, 2016
- March 15, 2016
- November 4, 2014
- March 18, 2014
- November 6, 2012
- March 20, 2012
- November 2, 2010
- February 2, 2010
- November 4, 2008
- February 5, 2008
See information about ordering voter registration files.
Downloadable data for qualifying users, including political organizations and those with FOIA requests.