Creates the Persistent Domestic Violence Offender Database Act. Requires the Illinois State Police to establish and maintain a Statewide Persistent Domestic Violence Offender Database for the purpose of identifying persistent domestic violence offenders. Requires the Illinois State Police to maintain the database based upon information supplied by the court clerks and information available to the Illinois State Police from the Department of Corrections and local law enforcement agencies. Requires the Illinois State Police to make the information contained in the database accessible to the public on the agency's Internet home page and update that information as it deems necessary. Sets forth the information that must be stored in the database. Provides that if a person is convicted of a domestic violence offense and the person convicted has at least one prior conviction for a domestic violence offense or if a person has an order of protection granted against them and the person has at least one prior order of protection granted against them, then the court shall, upon proof of any prior domestic violence offense convictions or order of protection, order the person to register as a persistent domestic violence offender. Requires the court clerk to forward to the Illinois State Police a certified copy of the qualifying conviction or order of protection and the date of birth of any person ordered to register as a persistent domestic violence offender. Contains provisions on registration fees. Requires the Illinois State Police to remove a registered person's name and other information from the database after a specified number of years following the person's last conviction. Provides that the Act applies only to persons convicted of a domestic violence offense or to persons against whom an order of protection is granted on or after January 1, 2027; however, a prior conviction is not required to occur on or after January 1, 2027.