(10 ILCS 91/10.66)
    Sec. 10.66. Representative District No. 66. Representative District No. 66 is comprised of:
 
District: 66
Kane County
    Tract: 850103
    Tract: 850105
    Tract: 850106
        Blockgroup: 4
            Block 4002
            Block 4003
    Tract: 850302
        Blockgroup: 2
            Block 2009
            Block 2038
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            Block 2065
            Block 2066
            Block 2067
    Tract: 850400
        Blockgroup: 1
            Block 1010
            Block 1011
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            Block 1014
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            Block 1016
            Block 1020
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            Block 1027
            Block 1028
            Block 1029
            Block 1030
        Blockgroup: 2
            Block 2001
            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
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            Block 2020
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            Block 2050
            Block 2051
            Block 2052
            Block 2053
            Block 2054
    Tract: 850500
        Blockgroup: 1
        Blockgroup: 2
            Block 2008
            Block 2009
            Block 2010
            Block 2011
            Block 2012
            Block 2013
            Block 2015
            Block 2016
            Block 2018
            Block 2020
            Block 2021
            Block 2023
            Block 2024
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            Block 2030
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            Block 2036
            Block 2037
            Block 2038
            Block 2039
            Block 2040
            Block 2043
            Block 2047
        Blockgroup: 3
        Blockgroup: 4
    Tract: 850600
        Blockgroup: 1
        Blockgroup: 2
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3002
            Block 3003
            Block 3004
            Block 3005
            Block 3006
            Block 3007
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            Block 3027
            Block 3028
            Block 3029
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            Block 3031
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            Block 3035
            Block 3036
            Block 3038
            Block 3039
            Block 3040
            Block 3041
            Block 3042
            Block 3043
            Block 3044
            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
            Block 3071
            Block 3072
            Block 3073
    Tract: 850701
        Blockgroup: 1
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
            Block 2007
            Block 2089
            Block 2090
            Block 2091
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            Block 2100
            Block 2101
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            Block 2104
            Block 2105
            Block 2106
            Block 2107
            Block 2108
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            Block 2110
            Block 2123
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            Block 2125
            Block 2126
            Block 2127
            Block 2128
            Block 2129
            Block 2130
            Block 2222
            Block 2223
            Block 2224
            Block 2225
            Block 2226
            Block 2228
            Block 2229
            Block 2230
            Block 2231
            Block 2232
            Block 2233
            Block 2234
            Block 2236
            Block 2237
            Block 2238
            Block 2239
            Block 2240
            Block 2241
            Block 2242
            Block 2244
            Block 2245
            Block 2246
            Block 2264
            Block 2266
            Block 2267
            Block 2268
            Block 2269
    Tract: 850800
        Blockgroup: 6
            Block 6007
    Tract: 851000
        Blockgroup: 1
        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 3030
            Block 3035
            Block 3036
            Block 3046
            Block 3047
McHenry County
    Tract: 870902
        Blockgroup: 1
            Block 1059
            Block 1060
            Block 1061
            Block 1062
    Tract: 871104
        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
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            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
            Block 1018
            Block 1019
            Block 1020
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            Block 1024
            Block 1025
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            Block 1048
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            Block 1050
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            Block 1064
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            Block 1066
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            Block 1068
            Block 1069
            Block 1070
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            Block 1080
            Block 1081
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            Block 1100
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            Block 1120
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            Block 1123
            Block 1124
            Block 1125
            Block 1126
            Block 1127
            Block 1128
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            Block 1144
            Block 1157
            Block 1158
            Block 1160
            Block 1161
            Block 1162
            Block 1163
            Block 1164
        Blockgroup: 2
        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 3015
            Block 3016
            Block 3017
            Block 3018
            Block 3022
        Blockgroup: 4
            Block 4014
            Block 4028
    Tract: 871105
        Blockgroup: 1
    Tract: 871106
        Blockgroup: 1
        Blockgroup: 2
            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 2033
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            Block 2048
            Block 2049
            Block 2050
            Block 2051
            Block 2052
            Block 2053
            Block 2054
            Block 2061
            Block 2063
        Blockgroup: 3
            Block 3017
            Block 3018
    Tract: 871107
    Tract: 871108
    Tract: 871109
    Tract: 871201
        Blockgroup: 1
            Block 1013
            Block 1014
            Block 1015
            Block 1018
            Block 1026
            Block 1027
            Block 1028
            Block 1044
            Block 1045
            Block 1046
            Block 1052
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
            Block 2003
            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
        Blockgroup: 3
        Blockgroup: 4
    Tract: 871202
    Tract: 871205
        Blockgroup: 1
            Block 1005
        Blockgroup: 2
        Blockgroup: 3
    Tract: 871206
    Tract: 871207
    Tract: 871208
    Tract: 871209
        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 1014
            Block 1015
            Block 1016
            Block 1018
            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 1035
            Block 1036
            Block 1037
            Block 1038
            Block 1039
            Block 1040
            Block 1041
            Block 1042
            Block 1043
            Block 1044
            Block 1045
        Blockgroup: 2
    Tract: 871500
        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 3015
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            Block 3018
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            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 3054
            Block 3055
            Block 3058
            Block 3059
            Block 3060
            Block 3061
            Block 3073
            Block 3133
            Block 3134
            Block 3135
            Block 3136
            Block 3137
            Block 3138
            Block 3139
(Source: P.A. 97-6, eff. 6-3-11.)