(10 ILCS 91/10.20)
    Sec. 10.20. Representative District No. 20. Representative District No. 20 is comprised of:
 
District: 20
Cook County
    Tract: 090100
    Tract: 090200
        Blockgroup: 1
        Blockgroup: 2
        Blockgroup: 3
        Blockgroup: 4
            Block 4000
            Block 4001
            Block 4002
            Block 4003
            Block 4004
            Block 4005
            Block 4006
            Block 4007
            Block 4008
            Block 4009
            Block 4010
            Block 4011
            Block 4012
            Block 4013
            Block 4014
            Block 4015
            Block 4019
            Block 4020
            Block 4021
            Block 4022
            Block 4023
            Block 4024
            Block 4025
            Block 4026
            Block 4027
            Block 4028
            Block 4029
            Block 4030
            Block 4031
            Block 4034
            Block 4035
            Block 4036
            Block 4037
        Blockgroup: 5
    Tract: 090300
    Tract: 100200
        Blockgroup: 1
            Block 1007
            Block 1008
            Block 1010
            Block 1011
            Block 1012
            Block 1024
            Block 1025
            Block 1026
        Blockgroup: 2
            Block 2006
            Block 2007
            Block 2008
            Block 2009
            Block 2010
            Block 2011
            Block 2012
            Block 2013
            Block 2015
            Block 2016
            Block 2017
            Block 2018
            Block 2019
            Block 2020
        Blockgroup: 3
        Blockgroup: 4
        Blockgroup: 5
        Blockgroup: 6
        Blockgroup: 7
    Tract: 100300
    Tract: 100400
    Tract: 100500
    Tract: 100600
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1008
        Blockgroup: 3
            Block 3003
            Block 3004
            Block 3005
            Block 3006
            Block 3007
            Block 3008
            Block 3009
            Block 3010
            Block 3011
            Block 3012
            Block 3013
            Block 3016
            Block 3017
            Block 3018
            Block 3020
            Block 3021
            Block 3022
            Block 3023
            Block 3024
            Block 3025
            Block 3031
            Block 3032
            Block 3033
            Block 3034
            Block 3035
            Block 3038
            Block 3039
        Blockgroup: 4
            Block 4000
            Block 4001
            Block 4002
            Block 4003
            Block 4004
            Block 4005
            Block 4006
            Block 4007
            Block 4008
            Block 4009
            Block 4011
            Block 4012
            Block 4022
            Block 4023
            Block 4024
            Block 4025
            Block 4026
            Block 4027
            Block 4028
            Block 4029
            Block 4030
            Block 4031
            Block 4067
            Block 4068
            Block 4069
            Block 4070
            Block 4071
            Block 4072
    Tract: 100700
        Blockgroup: 5
            Block 5000
            Block 5001
            Block 5002
            Block 5003
            Block 5004
            Block 5005
            Block 5006
    Tract: 170500
        Blockgroup: 2
        Blockgroup: 3
            Block 3001
            Block 3002
            Block 3003
            Block 3004
            Block 3005
            Block 3006
            Block 3007
            Block 3008
            Block 3009
            Block 3010
            Block 3011
            Block 3012
            Block 3013
            Block 3014
            Block 3015
            Block 3016
            Block 3017
            Block 3022
            Block 3023
            Block 3024
            Block 3025
            Block 3026
            Block 3027
            Block 3028
            Block 3029
            Block 3030
            Block 3031
            Block 3032
            Block 3033
        Blockgroup: 4
            Block 4005
            Block 4006
            Block 4007
            Block 4008
            Block 4009
            Block 4010
            Block 4011
            Block 4012
            Block 4013
            Block 4014
            Block 4015
            Block 4016
            Block 4017
            Block 4018
            Block 4019
            Block 4020
            Block 4030
            Block 4031
            Block 4032
            Block 4033
    Tract: 170600
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1008
            Block 1009
            Block 1010
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
            Block 2007
            Block 2008
            Block 2009
            Block 2010
            Block 2011
            Block 2012
            Block 2013
            Block 2014
            Block 2015
            Block 2016
            Block 2017
            Block 2018
            Block 2020
            Block 2021
    Tract: 170700
        Blockgroup: 3
            Block 3002
    Tract: 760801
        Blockgroup: 1
            Block 1002
            Block 1003
            Block 1004
            Block 1006
            Block 1007
            Block 1008
            Block 1009
            Block 1010
            Block 1011
    Tract: 760802
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1004
            Block 1005
            Block 1006
            Block 1007
            Block 1008
            Block 1009
            Block 1010
            Block 1011
            Block 1012
            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
            Block 1018
            Block 1019
            Block 1020
            Block 1021
            Block 1022
            Block 1023
            Block 1024
            Block 1025
            Block 1026
            Block 1027
            Block 1028
            Block 1029
            Block 1030
            Block 1031
            Block 1032
            Block 1033
            Block 1034
            Block 1035
            Block 1036
            Block 1037
            Block 1038
            Block 1039
            Block 1040
            Block 1041
            Block 1042
            Block 1043
            Block 1044
            Block 1045
            Block 1046
            Block 1047
            Block 1048
            Block 1051
    Tract: 760803
        Blockgroup: 1
        Blockgroup: 2
        Blockgroup: 3
            Block 3003
            Block 3004
        Blockgroup: 4
    Tract: 770700
        Blockgroup: 1
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
            Block 2007
            Block 2008
            Block 2009
            Block 2010
            Block 2012
            Block 2013
            Block 2014
            Block 2015
            Block 2016
            Block 2017
            Block 2018
            Block 2019
            Block 2020
            Block 2021
            Block 2022
            Block 2023
            Block 2024
            Block 2025
            Block 2026
            Block 2027
            Block 2028
            Block 2029
            Block 2030
            Block 2031
            Block 2032
            Block 2033
            Block 2034
            Block 2035
            Block 2036
            Block 2037
            Block 2038
            Block 2039
            Block 2040
            Block 2041
            Block 2050
            Block 2051
            Block 2052
            Block 2053
            Block 2054
            Block 2055
            Block 2056
            Block 2057
            Block 2058
            Block 2059
            Block 2060
            Block 2061
            Block 2062
            Block 2063
            Block 2064
            Block 2065
    Tract: 770800
        Blockgroup: 1
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
            Block 2007
            Block 2008
            Block 2009
            Block 2010
            Block 2011
            Block 2012
            Block 2013
            Block 2014
            Block 2015
            Block 2016
            Block 2017
            Block 2018
            Block 2019
            Block 2020
            Block 2021
            Block 2022
            Block 2023
            Block 2024
            Block 2025
            Block 2026
            Block 2027
            Block 2028
            Block 2029
            Block 2030
            Block 2031
            Block 2032
            Block 2033
            Block 2036
            Block 2037
            Block 2038
            Block 2039
            Block 2040
            Block 2041
            Block 2042
            Block 2043
            Block 2044
            Block 2045
            Block 2046
            Block 2047
            Block 2048
            Block 2049
            Block 2050
            Block 2051
            Block 2052
            Block 2053
            Block 2054
            Block 2055
            Block 2056
            Block 2057
            Block 2058
            Block 2059
            Block 2060
            Block 2061
            Block 2062
            Block 2063
    Tract: 770901
        Blockgroup: 1
        Blockgroup: 2
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3002
            Block 3003
            Block 3004
            Block 3005
            Block 3006
            Block 3007
            Block 3009
            Block 3010
            Block 3011
        Blockgroup: 4
    Tract: 770902
    Tract: 805401
        Blockgroup: 1
            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
            Block 1018
            Block 1019
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2005
            Block 2006
            Block 2007
            Block 2016
            Block 2017
            Block 2018
            Block 2019
            Block 2022
            Block 2023
            Block 2024
            Block 2025
            Block 2026
    Tract: 805402
        Blockgroup: 3
            Block 3003
            Block 3004
            Block 3005
            Block 3006
            Block 3007
            Block 3008
            Block 3009
            Block 3010
            Block 3011
            Block 3012
            Block 3013
            Block 3014
            Block 3015
            Block 3016
            Block 3017
            Block 3018
        Blockgroup: 4
        Blockgroup: 5
    Tract: 805501
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1004
            Block 1005
            Block 1006
            Block 1007
            Block 1008
            Block 1009
            Block 1010
            Block 1011
            Block 1012
            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
            Block 1018
            Block 1019
            Block 1020
        Blockgroup: 2
        Blockgroup: 3
    Tract: 805502
        Blockgroup: 1
        Blockgroup: 2
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3002
            Block 3003
            Block 3004
            Block 3005
            Block 3006
            Block 3007
            Block 3008
            Block 3013
            Block 3014
        Blockgroup: 4
            Block 4000
            Block 4001
            Block 4002
            Block 4003
            Block 4004
            Block 4005
            Block 4006
            Block 4007
            Block 4008
            Block 4009
            Block 4010
            Block 4011
            Block 4012
            Block 4013
            Block 4014
            Block 4015
            Block 4016
            Block 4017
            Block 4018
            Block 4019
            Block 4020
            Block 4021
            Block 4022
    Tract: 805600
        Blockgroup: 2
            Block 2024
            Block 2025
            Block 2026
            Block 2027
            Block 2028
            Block 2031
            Block 2035
            Block 2036
            Block 2037
            Block 2038
            Block 2039
            Block 2040
            Block 2041
            Block 2048
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3002
            Block 3016
            Block 3017
    Tract: 805801
        Blockgroup: 1
            Block 1000
            Block 1001
    Tract: 805802
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1004
            Block 1005
            Block 1006
    Tract: 805901
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1004
            Block 1005
            Block 1006
            Block 1007
            Block 1008
            Block 1009
            Block 1010
            Block 1011
            Block 1012
            Block 1013
            Block 1014
            Block 1015
            Block 1024
            Block 1025
            Block 1026
            Block 1027
            Block 1028
            Block 1029
            Block 1030
            Block 1031
            Block 1032
            Block 1033
            Block 1034
            Block 1035
            Block 1036
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3002
            Block 3003
            Block 3004
            Block 3005
            Block 3006
            Block 3007
            Block 3008
            Block 3009
            Block 3010
            Block 3011
            Block 3012
            Block 3013
            Block 3014
            Block 3016
            Block 3017
            Block 3018
            Block 3019
            Block 3020
            Block 3021
            Block 3022
            Block 3023
            Block 3030
            Block 3031
            Block 3032
    Tract: 805902
        Blockgroup: 3
        Blockgroup: 5
            Block 5001
            Block 5002
            Block 5003
            Block 5004
            Block 5005
            Block 5006
            Block 5007
            Block 5008
        Blockgroup: 6
            Block 6005
            Block 6006
            Block 6007
            Block 6008
            Block 6009
            Block 6010
            Block 6011
            Block 6012
            Block 6017
            Block 6018
    Tract: 806001
        Blockgroup: 2
            Block 2004
            Block 2005
            Block 2006
            Block 2007
        Blockgroup: 4
            Block 4001
            Block 4002
            Block 4003
    Tract: 806002
        Blockgroup: 1
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
            Block 2007
            Block 2008
            Block 2009
            Block 2010
            Block 2011
            Block 2015
            Block 2016
            Block 2017
            Block 2018
            Block 2019
            Block 2020
            Block 2021
            Block 2022
            Block 2023
            Block 2024
            Block 2025
            Block 2026
            Block 2027
            Block 2028
            Block 2029
            Block 2030
            Block 2031
            Block 2032
            Block 2033
            Block 2034
            Block 2035
            Block 2036
            Block 2037
            Block 2041
            Block 2042
            Block 2043
            Block 2044
            Block 2045
        Blockgroup: 3
        Blockgroup: 4
        Blockgroup: 5
    Tract: 806003
        Blockgroup: 1
            Block 1004
            Block 1005
            Block 1006
            Block 1007
        Blockgroup: 2
        Blockgroup: 3
            Block 3000
        Blockgroup: 6
            Block 6002
            Block 6003
            Block 6004
            Block 6005
    Tract: 806104
        Blockgroup: 1
            Block 1002
            Block 1003
            Block 1004
            Block 1012
        Blockgroup: 2
            Block 2045
            Block 2047
            Block 2048
            Block 2049
            Block 2050
            Block 2051
            Block 2052
            Block 2057
            Block 2058
            Block 2059
            Block 2060
            Block 2061
            Block 2062
            Block 2063
            Block 2064
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3002
            Block 3003
            Block 3004
            Block 3005
            Block 3010
            Block 3011
            Block 3012
            Block 3013
            Block 3014
            Block 3015
            Block 3016
    Tract: 806600
        Blockgroup: 1
            Block 1001
            Block 1002
            Block 1003
            Block 1004
            Block 1005
            Block 1006
            Block 1007
            Block 1008
            Block 1009
            Block 1010
            Block 1011
            Block 1012
            Block 1013
            Block 1019
            Block 1020
            Block 1021
        Blockgroup: 2
            Block 2006
            Block 2007
            Block 2014
            Block 2015
            Block 2016
            Block 2017
            Block 2018
            Block 2019
            Block 2020
            Block 2021
            Block 2022
            Block 2023
            Block 2024
            Block 2025
            Block 2026
            Block 2027
            Block 2028
            Block 2029
            Block 2030
            Block 2031
            Block 2032
            Block 2033
            Block 2034
            Block 2035
            Block 2036
            Block 2037
            Block 2038
            Block 2039
            Block 2040
            Block 2041
            Block 2042
            Block 2043
    Tract: 808100
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
            Block 2014
            Block 2015
            Block 2016
    Tract: 808200
        Blockgroup: 2
            Block 2009
            Block 2010
            Block 2013
            Block 2014
            Block 2015
            Block 2016
            Block 2017
            Block 2018
        Blockgroup: 3
            Block 3018
            Block 3019
            Block 3020
            Block 3021
            Block 3022
            Block 3023
    Tract: 810400
        Blockgroup: 3
            Block 3018
            Block 3025
            Block 3026
            Block 3027
            Block 3028
            Block 3029
            Block 3030
            Block 3031
            Block 3032
            Block 3033
            Block 3034
            Block 3035
            Block 3036
            Block 3037
            Block 3038
            Block 3039
            Block 3040
            Block 3041
            Block 3042
            Block 3043
            Block 3044
            Block 3045
            Block 3048
            Block 3049
            Block 3050
            Block 3051
            Block 3052
            Block 3053
            Block 3054
            Block 3056
            Block 3057
            Block 3058
            Block 3059
            Block 3060
            Block 3061
            Block 3062
            Block 3063
            Block 3064
            Block 3065
            Block 3066
            Block 3067
            Block 3068
            Block 3069
            Block 3070
            Block 3071
            Block 3072
    Tract: 810501
        Blockgroup: 1
        Blockgroup: 2
        Blockgroup: 3
        Blockgroup: 4
            Block 4000
            Block 4001
            Block 4002
            Block 4003
            Block 4004
            Block 4005
            Block 4006
            Block 4007
            Block 4008
        Blockgroup: 5
            Block 5002
            Block 5003
            Block 5004
    Tract: 810502
        Blockgroup: 1
            Block 1010
            Block 1011
            Block 1012
            Block 1013
            Block 1014
        Blockgroup: 2
            Block 2002
            Block 2003
            Block 2013
    Tract: 811500
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1004
            Block 1005
            Block 1006
            Block 1007
            Block 1008
            Block 1009
            Block 1010
            Block 1011
            Block 1012
            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
            Block 1018
            Block 1019
            Block 1020
            Block 1021
            Block 1022
            Block 1023
            Block 1024
            Block 1025
            Block 1026
            Block 1027
            Block 1047
        Blockgroup: 4
            Block 4000
            Block 4002
    Tract: 811600
    Tract: 980000
        Blockgroup: 1
            Block 1081
            Block 1082
            Block 1083
            Block 1084
            Block 1096
(Source: P.A. 97-6, eff. 6-3-11.)