Section 20

(10 ILCS 92/20) Sec. 20. Definitions; exceptions; deposit; description. (a) In this Act, all counties, census tracts, blockgroups, and blocks are those that appear on maps published by the United States Bureau of the Census for the 2020 census. (b) In this Act: "Tract" means census tract. A census tract is identified by a number with up to 4 digits and an optional 2-digit suffix. Census tract numbers consist of 6 digits with an implied decimal point between the fourth and fifth digit, with leading zeroes for census tract numbers with less than 4 digits and trailing zeroes for census tract numbers without a suffix. "Wd" means ward. "Pct" means precinct as the precinct was configured on May 27, 2021. (c) Legislative and Representative Districts created by this Act for the purpose of electing Senators to the Illinois Senate and Representatives to the Illinois House of Representatives shall not be altered by operation of any other law, ordinance, or resolution. (d) In this Act, blocks are identified by a 15-digit number as follows: (1) The first 2 digits are the state code, using American National Standards Institute