Welcome to Information Services of Illinois

ISI has compiled the most current, accurate data base of real property information to be found in Northern Illinois. Within our Web site, we offer access to Real Property Assessments, Taxes, Transfers, Mortgages and other descriptive data to help you in your real estate related business or personal investment pursuits. You will find Names, Addresses, Phone Numbers, Tax Maps and Aerial photographs for all property in the greater Chicago area (click on Coverage for the map of counties we cover).

To learn more about our service and how ISI can make information gathering easier, click on Contact Us and drop us a note - or call us. Thanks for visiting!!