(10 ILCS 91/10.77)
    Sec. 10.77. Representative District No. 77. Representative District No. 77 is comprised of:
 
District: 77
Cook County
    Tract: 770500
        Blockgroup: 2
            Block 2038
            Block 2039
            Block 2040
            Block 2041
            Block 2042
            Block 2043
            Block 2046
            Block 2047
            Block 2057
            Block 2058
            Block 2059
            Block 2060
    Tract: 770602
        Blockgroup: 2
    Tract: 770700
        Blockgroup: 2
            Block 2011
            Block 2042
            Block 2043
            Block 2044
            Block 2045
            Block 2046
            Block 2047
            Block 2048
            Block 2049
    Tract: 770800
        Blockgroup: 2
            Block 2034
            Block 2035
    Tract: 811301
    Tract: 811302
        Blockgroup: 1
        Blockgroup: 2
            Block 2007
            Block 2008
            Block 2009
            Block 2010
            Block 2011
            Block 2012
            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 2034
            Block 2036
            Block 2037
            Block 2038
            Block 2041
            Block 2042
            Block 2043
            Block 2044
            Block 2045
            Block 2046
            Block 2047
            Block 2048
            Block 2049
            Block 2050
            Block 2051
    Tract: 811401
        Blockgroup: 1
            Block 1002
            Block 1003
            Block 1004
            Block 1005
            Block 1006
            Block 1007
            Block 1008
            Block 1009
            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
            Block 1018
            Block 1019
            Block 1020
            Block 1021
    Tract: 811402
        Blockgroup: 2
        Blockgroup: 3
            Block 3009
            Block 3010
    Tract: 811500
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
            Block 2007
            Block 2008
            Block 2009
        Blockgroup: 3
            Block 3019
            Block 3020
            Block 3021
            Block 3022
            Block 3023
            Block 3024
            Block 3025
            Block 3026
            Block 3027
            Block 3028
            Block 3029
            Block 3030
            Block 3034
            Block 3042
        Blockgroup: 4
            Block 4001
            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
            Block 4023
            Block 4024
            Block 4025
            Block 4026
            Block 4027
            Block 4028
            Block 4029
            Block 4030
            Block 4031
            Block 4032
            Block 4033
            Block 4034
            Block 4035
            Block 4036
            Block 4037
            Block 4038
            Block 4039
            Block 4040
            Block 4041
            Block 4043
            Block 4044
    Tract: 811701
    Tract: 811702
    Tract: 811800
    Tract: 816200
        Blockgroup: 1
            Block 1004
            Block 1005
            Block 1006
            Block 1007
            Block 1008
            Block 1009
            Block 1010
            Block 1011
            Block 1012
            Block 1013
            Block 1014
            Block 1015
        Blockgroup: 2
        Blockgroup: 3
    Tract: 816300
    Tract: 816401
    Tract: 816402
    Tract: 816500
    Tract: 816600
    Tract: 816700
    Tract: 816800
        Blockgroup: 1
            Block 1037
    Tract: 816900
        Blockgroup: 1
            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
            Block 1019
            Block 1020
            Block 1036
        Blockgroup: 4
            Block 4000
            Block 4001
            Block 4002
            Block 4003
            Block 4004
            Block 4005
            Block 4006
            Block 4007
            Block 4008
            Block 4010
    Tract: 817400
        Blockgroup: 1
            Block 1000
            Block 1001
        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 2014
            Block 2015
        Blockgroup: 3
            Block 3001
            Block 3002
            Block 3003
            Block 3004
            Block 3005
            Block 3006
            Block 3007
            Block 3009
            Block 3010
            Block 3011
            Block 3012
            Block 3013
            Block 3014
            Block 3015
            Block 3016
            Block 3017
            Block 3018
            Block 3019
            Block 3020
            Block 3021
            Block 3022
            Block 3023
            Block 3024
            Block 3025
            Block 3026
            Block 3027
            Block 3028
            Block 3032
            Block 3033
            Block 3034
            Block 3035
            Block 3036
            Block 3037
            Block 3038
            Block 3039
    Tract: 980000
        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 1049
            Block 1050
            Block 1051
            Block 1052
            Block 1053
            Block 1054
            Block 1055
            Block 1056
            Block 1057
            Block 1058
            Block 1059
            Block 1060
            Block 1061
            Block 1062
            Block 1063
            Block 1064
            Block 1065
            Block 1066
            Block 1067
            Block 1068
            Block 1069
            Block 1070
            Block 1071
            Block 1072
            Block 1073
            Block 1074
            Block 1075
            Block 1076
            Block 1077
            Block 1078
            Block 1079
            Block 1080
            Block 1085
            Block 1086
            Block 1087
            Block 1088
            Block 1089
            Block 1090
            Block 1091
            Block 1092
            Block 1093
            Block 1094
            Block 1095
            Block 1097
            Block 1098
            Block 1099
            Block 1100
            Block 1101
            Block 1102
DuPage County
    Tract: 840000
    Tract: 840101
        Blockgroup: 1
            Block 1007
            Block 1008
            Block 1009
            Block 1010
            Block 1011
            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
            Block 1018
            Block 1019
            Block 1020
            Block 1021
            Block 1022
            Block 1023
            Block 1025
        Blockgroup: 2
            Block 2000
            Block 2004
            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
        Blockgroup: 3
        Blockgroup: 4
            Block 4000
            Block 4001
            Block 4002
            Block 4003
            Block 4004
            Block 4025
            Block 4026
            Block 4027
            Block 4028
            Block 4029
            Block 4030
            Block 4031
            Block 4032
            Block 4033
            Block 4034
            Block 4035
            Block 4036
            Block 4037
            Block 4038
            Block 4039
            Block 4046
            Block 4058
            Block 4059
            Block 4072
            Block 4073
            Block 4074
    Tract: 840103
        Blockgroup: 1
            Block 1009
            Block 1010
            Block 1011
            Block 1012
            Block 1013
            Block 1016
            Block 1017
            Block 1018
            Block 1019
            Block 1020
            Block 1021
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
        Blockgroup: 3
            Block 3010
            Block 3011
            Block 3013
            Block 3014
            Block 3019
            Block 3020
            Block 3021
            Block 3022
            Block 3023
            Block 3024
            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 3046
            Block 3047
            Block 3048
            Block 3049
            Block 3050
            Block 3051
            Block 3052
            Block 3053
            Block 3054
            Block 3055
            Block 3056
            Block 3057
            Block 3058
            Block 3059
            Block 3060
            Block 3061
            Block 3062
            Block 3063
            Block 3064
            Block 3065
            Block 3066
        Blockgroup: 4
            Block 4016
            Block 4018
            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 4032
            Block 4033
            Block 4034
            Block 4035
            Block 4036
            Block 4037
            Block 4038
            Block 4039
            Block 4040
            Block 4041
            Block 4042
            Block 4043
            Block 4044
            Block 4045
            Block 4046
            Block 4047
            Block 4048
            Block 4049
            Block 4050
            Block 4051
            Block 4052
            Block 4053
            Block 4054
            Block 4055
            Block 4056
            Block 4057
            Block 4058
            Block 4059
            Block 4060
            Block 4061
            Block 4062
            Block 4063
            Block 4064
            Block 4065
            Block 4066
            Block 4067
            Block 4068
            Block 4069
            Block 4070
            Block 4071
            Block 4072
            Block 4073
            Block 4074
            Block 4075
            Block 4076
            Block 4077
            Block 4078
            Block 4079
            Block 4080
            Block 4081
            Block 4082
            Block 4083
            Block 4084
            Block 4085
            Block 4086
            Block 4087
    Tract: 840104
        Blockgroup: 1
            Block 1009
            Block 1010
            Block 1011
            Block 1017
            Block 1018
            Block 1019
            Block 1020
            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
        Blockgroup: 2
        Blockgroup: 3
        Blockgroup: 4
        Blockgroup: 5
    Tract: 840202
        Blockgroup: 3
            Block 3024
        Blockgroup: 4
            Block 4000
            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
            Block 4023
            Block 4024
            Block 4025
    Tract: 840303
        Blockgroup: 3
    Tract: 840600
        Blockgroup: 3
            Block 3010
            Block 3011
            Block 3012
            Block 3013
            Block 3014
            Block 3015
            Block 3016
            Block 3017
            Block 3030
            Block 3032
    Tract: 840703
    Tract: 840704
    Tract: 840801
    Tract: 840802
    Tract: 846603
    Tract: 846604
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2005
            Block 2006
            Block 2007
            Block 2009
            Block 2010
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3002
            Block 3009
            Block 3010
    Tract: 846701
        Blockgroup: 1
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
        Blockgroup: 3
    Tract: 846702
        Blockgroup: 1
            Block 1016
            Block 1017
            Block 1018
            Block 1075
        Blockgroup: 2
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3002
            Block 3003
            Block 3004
            Block 3005
            Block 3006
            Block 3011
(Source: P.A. 97-6, eff. 6-3-11.)