The Illinois House and Senate approved new state legislative boundaries during a special session on Aug. 31. The maps revised earlier legislative redistricting plans enacted in June that were based on less detailed census data. This was done to meet the state constitution’s June 30 deadline for approving a state legislative redistricting plan. The recently approved maps were drawn using the census block-level data from the 2020 census that was released on Aug. 12.
Illimois House (Adopted Aug 31, 2021)
Illinois Senate Map (Adopted Aug 31 2021)
