(10 ILCS 77/10.12)
Sec. 10.12. Congressional District No. 12. Congressional District No. 12 is comprised of: District: 12 Alexander County Franklin County Jackson County Jefferson County Madison County Tract: 400101 Tract: 400102 Tract: 400200 Tract: 400600 Tract: 400700 Tract: 400801 Tract: 400802 Tract: 400903 Tract: 400904 Tract: 400951 Tract: 400952 Tract: 401000 Tract: 401100 Tract: 401200 Tract: 401300 Tract: 401400 Tract: 401500 Tract: 401701 Tract: 401721 Tract: 401722 Tract: 401800 Tract: 401901 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 2032 Block 2034 Block 2035 Block 2036 Block 2037 Block 2038 Tract: 401903 Tract: 401904 Tract: 402000 Blockgroup: 1 Block 1000 Block 1001 Block 1002 Block 1003 Block 1004 Block 1005 Block 1006 Block 1007 Block 1008 Block 1010 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 Blockgroup: 2 Blockgroup: 3 Blockgroup: 4 Tract: 402100 Tract: 402200 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 2017 Block 2018 Block 2019 Block 2020 Block 2021 Block 2022 Blockgroup: 3 Tract: 402300 Blockgroup: 1 Block 1000 Block 1001 Block 1004 Block 1005 Block 1006 Block 1007 Block 1008 Block 1009 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 Blockgroup: 2 Tract: 402400 Tract: 402500 Tract: 402600 Tract: 402701 Blockgroup: 3 Block 3022 Block 3023 Block 3024 Block 3027 Block 3031 Block 3032 Block 3034 Block 3035 Block 3036 Block 3037 Block 3038 Block 3039 Block 3040 Block 3041 Block 3042 Block 3043 Block 3045 Block 3046 Block 3047 Block 3048 Block 3049 Block 3050 Block 3051 Block 3052 Block 3059 Block 3062 Block 3068 Block 3071 Block 3072 Block 3073 Block 3074 Block 3075 Block 3076 Block 3077 Block 3078 Block 3080 Block 3081 Block 3083 Block 3085 Block 3088 Block 3089 Block 3090 Block 3091 Block 3092 Block 3093 Block 3094 Blockgroup: 4 Block 4013 Block 4014 Block 4015 Tract: 402722 Blockgroup: 1 Block 1059 Block 1061 Tract: 402801 Blockgroup: 1 Block 1033 Blockgroup: 2 Block 2046 Block 2047 Block 2048 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: 402802 Blockgroup: 2 Block 2080 Block 2081 Blockgroup: 5 Block 5007 Block 5008 Block 5009 Block 5010 Block 5011 Block 5012 Block 5013 Block 5015 Block 5016 Block 5017 Block 5018 Block 5019 Block 5020 Block 5021 Block 5026 Block 5027 Tract: 402803 Blockgroup: 1 Block 1010 Block 1011 Block 1012 Block 1013 Block 1014 Block 1015 Block 1016 Blockgroup: 2 Block 2086 Block 2115 Tract: 403534 Blockgroup: 2 Block 2039 Block 2040 Block 2041 Block 2046 Tract: 404000 Tract: 404100 Monroe County Perry County Pulaski County Randolph County St. Clair County Union County Williamson County
(Source: P.A. 97-14, eff. 6-24-11.)