55 ILCS 5/2-3005

The apportionment plan developed by the county board or the county apportionment commission, as the case may be, must be filed in the office of the county clerk by the time required by this Division. The county clerk shall promptly forward copies of that plan to the chairman of the county board and shall keep other copies of the plan available for distribution free of charge to any registered voter of the county requesting a copy.