(10 ILCS 91/10.12)
    Sec. 10.12. Representative District No. 12. Representative District No. 12 is comprised of:
 
District: 12
Cook County
    Tract: 031300
        Blockgroup: 1
            Block 1001
            Block 1002
            Block 1003
            Block 1004
            Block 1005
    Tract: 031400
        Blockgroup: 1
        Blockgroup: 2
        Blockgroup: 3
        Blockgroup: 4
            Block 4002
            Block 4003
            Block 4004
            Block 4005
            Block 4006
            Block 4007
            Block 4008
            Block 4009
            Block 4010
        Blockgroup: 5
        Blockgroup: 6
            Block 6000
            Block 6001
            Block 6002
            Block 6005
    Tract: 032100
    Tract: 060500
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1003
            Block 1005
            Block 1006
            Block 1007
    Tract: 060800
        Blockgroup: 1
        Blockgroup: 2
            Block 2001
            Block 2002
            Block 2003
            Block 2004
        Blockgroup: 3
    Tract: 060900
        Blockgroup: 1
        Blockgroup: 2
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
            Block 2007
        Blockgroup: 3
        Blockgroup: 4
        Blockgroup: 5
    Tract: 061000
    Tract: 061100
    Tract: 061200
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1004
            Block 1005
            Block 1012
            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
            Block 1018
    Tract: 061500
        Blockgroup: 1
            Block 1000
            Block 1003
            Block 1006
            Block 1007
            Block 1012
            Block 1013
            Block 1016
            Block 1017
    Tract: 061800
    Tract: 061901
    Tract: 061902
        Blockgroup: 1
        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
        Blockgroup: 4
    Tract: 062000
    Tract: 062100
    Tract: 062200
    Tract: 062300
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1005
            Block 1006
            Block 1011
            Block 1012
            Block 1013
            Block 1014
            Block 1015
            Block 1016
            Block 1017
    Tract: 062900
    Tract: 063000
    Tract: 063100
    Tract: 063200
        Blockgroup: 1
        Blockgroup: 2
        Blockgroup: 3
        Blockgroup: 4
            Block 4001
            Block 4002
            Block 4003
            Block 4004
            Block 4005
            Block 4006
        Blockgroup: 5
        Blockgroup: 6
    Tract: 063301
    Tract: 063302
    Tract: 063303
    Tract: 063400
    Tract: 070101
        Blockgroup: 1
        Blockgroup: 2
        Blockgroup: 3
            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
    Tract: 070102
    Tract: 070200
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1004
            Block 1005
    Tract: 071300
        Blockgroup: 1
            Block 1002
    Tract: 071400
        Blockgroup: 1
            Block 1000
        Blockgroup: 2
            Block 2001
            Block 2002
            Block 2003
            Block 2004
            Block 2005
            Block 2006
            Block 2007
            Block 2008
            Block 2009
            Block 2011
        Blockgroup: 3
        Blockgroup: 4
            Block 4000
            Block 4001
            Block 4002
            Block 4003
    Tract: 071500
        Blockgroup: 1
        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 3018
            Block 3019
            Block 3020
            Block 3021
            Block 3022
            Block 3023
            Block 3024
        Blockgroup: 4
            Block 4000
            Block 4001
            Block 4002
            Block 4003
            Block 4004
            Block 4005
            Block 4006
            Block 4007
            Block 4008
        Blockgroup: 5
        Blockgroup: 6
    Tract: 071600
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1013
            Block 1014
            Block 1015
            Block 1016
    Tract: 071700
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1008
    Tract: 080100
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
        Blockgroup: 3
        Blockgroup: 4
        Blockgroup: 5
            Block 5000
            Block 5001
            Block 5002
            Block 5003
            Block 5004
            Block 5005
            Block 5006
            Block 5007
            Block 5008
            Block 5009
            Block 5010
            Block 5011
            Block 5012
            Block 5013
        Blockgroup: 6
        Blockgroup: 7
    Tract: 080201
    Tract: 080202
        Blockgroup: 2
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3002
    Tract: 080300
        Blockgroup: 1
            Block 1000
            Block 1001
            Block 1002
            Block 1003
            Block 1006
            Block 1007
        Blockgroup: 2
            Block 2000
            Block 2001
            Block 2002
        Blockgroup: 3
            Block 3000
            Block 3001
            Block 3004
            Block 3005
            Block 3006
            Block 3007
            Block 3008
            Block 3009
        Blockgroup: 4
    Tract: 830700
        Blockgroup: 1
    Tract: 832000
    Tract: 832100
(Source: P.A. 97-6, eff. 6-3-11.)