Amends the Unified Code of Corrections. Provides that the master record file of the Department of Corrections and the Department of Juvenile Justice of each person committed to the respective Department shall contain ethnic and racial background data and the person's last known complete street address prior to incarceration or legal residence collected in accordance with the No Representation Without Population Act. Provides that the clerk of the court shall transmit to the department, agency, or institution to which the defendant is committed the last known complete street address prior to incarceration or legal residence, the person's race, whether the person is of Hispanic or Latino origin, and whether the person is 18 years of age or older. Amends the No Representation Without Population Act. Provides that on or before May 1 of each year in which the federal decennial census is taken but in which the United States Bureau of the Census allocates incarcerated persons as residents of correctional facilities, the Department of Corrections shall deliver to the State Board of Elections the last known address of the person prior to incarceration or other legal residence, if known. Provides that if the address or residence is unknown, the Department shall use, if available, addresses collected for purposes of parole, mandatory supervised release, or aftercare release programs.