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 20 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:
See information about ordering voter registration files.
Downloadable data for qualifying users, including political organizations and those with FOIA requests.