| Intellius | Intellius is the nation's most popular background search firm and has been around longer than anyone in the game. | |
| State of Illinois Criminal Background Checks | The Illinois State Police allows the public to request background check of criminals. You may look for Access and Review, or Record Challenge, submissions. | |
| Business and Corporation Search | Cyberdrive Illinois is a website that allows you to research corporations, LLCs, and other business certificates filed within the state. You may search the Corporate/LLC Database by either file number or name. The File Detail Report that is returned for a corporation or limited liability company includes the most commonly requested information on the business entity. | |
| Death Records | View official death records on the Illinois Department of Public Health website. | |
| Most Wanted Criminals | View lists of the most wanted criminals, maintained by various state agencies. | |
| Fictitious Business Name Statements | Research official filings for Fictitious Business Names within Illinois. | |
| Inmate Search | This website, maintained by the Illinois Department of Corrections, allows the public to view the location and release date of persons who have been incarcerated within Illinois. You may search for individuals by name, IDOC, or birthdate. | |
| Inmate Search | View official marriage licenses filed within the state of Illinois. | |
| Property Records | The Illinois County Recorder website maintains official state property holding records. If you are not adverse to spending a nominal fee, we highly recommend using Intellius to obtain this information. Intellius generally has information that is much more comprehensive, and data can be pulled up immediately on the internet, rather than having to go into a physical office. | |