(10 ILCS 91/10.31) Sec. 10.31. Representative District No. 31. Representative District No. 31 is comprised of: District: 31Cook CountyTract: 661000Blockgroup: 2Block 2001Block 2002Block 2017Block 2018Block 2021Block 2022Tract: 671800Blockgroup: 1Block 1000Block 1003Block 1004Block 1005Block 1008Block 1009Block 1010Block 1011Block 1012Block 1013Block 1014Block 1015Block 1016Block 1017Block 1018Block 1019Block 1020Block 1021Block 1022Block 1023Block 1024Block 1025Block 1026Block 1027Block 1028Block 1029Block 1030Block 1031Block 1032Block 1033Block 1034Tract: 671900Blockgroup: 1Block 1014Block 1015Block 1016Block 1017Block 1018Block 1019Block 1020Block 1021Block 1022Block 1023Block 1024Block 1025Block 1026Block 1027Block 1028Block 1029Block 1030Block 1031Block 1032Block 1033Block 1034Block 1035Block 1036Block 1037Block 1038Block 1039Block 1040Block 1041Block 1042Tract: 672000Blockgroup: 1Block 1007Block 1008Block 1009Block 1010Block 1011Block 1012Block 1013Block 1014Block 1017Block 1018Block 1019Block 1020Blockgroup: 2Block 2009Block 2010Block 2011Block 2012Block 2013Block 2014Block 2015Block 2016Block 2017Block 2018Block 2019Blockgroup: 3Block 3009Block 3010Block 3011Block 3012Block 3013Block 3014Block 3015Block 3016Block 3017Block 3018Block 3019Block 3020Blockgroup: 4Block 4005Block 4006Block 4007Block 4008Block 4009Block 4010Block 4011Block 4012Block 4013Tract: 681300Blockgroup: 1Blockgroup: 2Block 2015Block 2016Block 2017Blockgroup: 3Tract: 681400Blockgroup: 1Block 1002Block 1003Block 1004Block 1005Block 1007Block 1008Block 1009Block 1010Block 1011Block 1012Block 1013Block 1014Blockgroup: 2Blockgroup: 3Blockgroup: 4Tract: 691100Blockgroup: 2Block 2003Block 2004Block 2005Block 2006Block 2007Block 2008Block 2009Blockgroup: 3Blockgroup: 4Block 4010Block 4014Block 4015Block 4016Block 4017Block 4018Block 4019Tract: 691200Blockgroup: 1Blockgroup: 2Block 2007Block 2008Block 2009Block 2010Block 2011Block 2012Block 2015Block 2016Block 2017Block 2022Block 2023Blockgroup: 3Tract: 700100Blockgroup: 2Block 2000Block 2001Block 2002Block 2003Block 2004Block 2005Block 2006Block 2007Block 2008Block 2009Block 2010Block 2011Block 2012Block 2013Block 2014Block 2016Block 2018Block 2053Block 2054Block 2055Block 2056Tract: 700302Blockgroup: 4Block 4012Block 4013Block 4014Block 4018Block 4019Block 4020Block 4021Block 4022Block 4023Block 4024Block 4025Block 4026Block 4027Block 4028Block 4037Block 4038Block 4039Block 4040Block 4041Block 4042Block 4043Block 4044Block 4045Block 4054Block 4055Block 4056Block 4057Block 4058Tract: 700401Blockgroup: 1Block 1056Block 1057Block 1058Block 1059Block 1060Block 1063Block 1064Block 1065Block 1066Block 1067Blockgroup: 3Block 3022Block 3023Block 3024Block 3025Block 3026Block 3027Block 3028Block 3029Block 3038Blockgroup: 4Block 4000Block 4001Block 4009Block 4010Block 4011Block 4012Block 4013Block 4014Block 4015Block 4016Block 4017Block 4018Block 4019Block 4020Block 4021Block 4022Block 4023Tract: 700402Blockgroup: 1Block 1000Block 1005Block 1006Block 1007Block 1008Block 1009Block 1012Block 1013Block 1014Block 1015Block 1016Block 1017Block 1018Block 1019Block 1020Block 1021Block 1022Block 1023Block 1024Block 1025Block 1026Block 1027Block 1028Block 1029Block 1030Block 1031Block 1032Blockgroup: 2Blockgroup: 3Tract: 700501Blockgroup: 1Blockgroup: 2Blockgroup: 3Blockgroup: 4Blockgroup: 5Blockgroup: 6Block 6000Block 6001Block 6002Block 6003Block 6004Block 6005Block 6006Block 6007Block 6008Block 6009Block 6010Block 6011Block 6012Block 6013Block 6014Block 6015Block 6016Block 6017Block 6018Block 6019Block 6020Block 6021Block 6022Block 6023Block 6024Block 6025Block 6026Block 6027Block 6028Block 6029Block 6030Block 6031Block 6032Block 6033Tract: 700502Blockgroup: 1Block 1011Block 1012Block 1013Block 1014Block 1015Block 1016Block 1017Block 1018Block 1019Block 1021Block 1022Block 1023Block 1024Block 1025Blockgroup: 2Block 2000Block 2001Block 2002Block 2003Block 2004Block 2005Block 2006Block 2007Block 2008Block 2009Block 2010Block 2011Block 2012Block 2013Block 2014Block 2015Block 2016Block 2020Tract: 710100Tract: 710200Tract: 710300Tract: 710400Tract: 710500Tract: 710600Tract: 710700Tract: 710800Tract: 710900Blockgroup: 1Blockgroup: 2Block 2000Block 2001Block 2002Block 2003Block 2004Block 2005Block 2006Block 2007Block 2009Block 2010Block 2011Block 2012Block 2013Block 2014Block 2016Block 2017Block 2018Block 2019Block 2020Block 2024Block 2025Block 2026Block 2027Block 2042Block 2043Tract: 711000Blockgroup: 1Block 1002Block 1003Block 1004Block 1005Block 1006Block 1007Block 1008Block 1009Blockgroup: 2Block 2000Block 2001Block 2002Block 2003Block 2004Block 2005Block 2006Block 2009Block 2010Tract: 711100Blockgroup: 1Block 1000Block 1001Block 1002Block 1003Block 1004Block 1005Blockgroup: 3Block 3000Block 3001Block 3002Block 3003Block 3004Block 3005Block 3009Block 3011Tract: 711200Blockgroup: 1Block 1000Block 1001Block 1006Block 1007Block 1008Block 1009Block 1010Block 1011Block 1015Blockgroup: 4Block 4000Block 4001Block 4002Block 4003Block 4004Block 4005Block 4006Block 4007Block 4008Block 4009Block 4010Block 4011Block 4012Block 4015Block 4016Block 4019Block 4020Tract: 820101Blockgroup: 1Block 1015Block 1016Block 1020Blockgroup: 6Blockgroup: 7Tract: 820103Blockgroup: 3Block 3030Block 3035Block 3036Block 3037Blockgroup: 4Block 4030Block 4031Tract: 820104Blockgroup: 2Block 2000Block 2001Block 2002Block 2003Block 2004Block 2006Block 2007Block 2008Block 2009Block 2010Block 2011Block 2012Block 2013Block 2014Block 2015Block 2016Block 2017Block 2018Block 2019Block 2020Block 2021Block 2022Block 2023Block 2024Block 2025Blockgroup: 3Block 3008Block 3009Block 3010Block 3011Block 3012Block 3013Block 3014Block 3015Block 3016Block 3017Blockgroup: 4Tract: 820201Blockgroup: 1Block 1000Block 1001Block 1002Block 1003Block 1004Block 1005Block 1006Block 1007Block 1008Block 1009Block 1010Block 1011Block 1012Block 1013Block 1014Block 1015Block 1016Block 1017Block 1018Block 1019Block 1020Block 1021Block 1022Block 1023Block 1024Block 1025Block 1026Block 1027Block 1028Block 1041Block 1042Block 1043Block 1044Block 1045Block 1047Block 1048Block 1049Block 1050Block 1051Block 1052Block 1053Block 1054Block 1055Block 1056Block 1057Block 1058Block 1059Block 1060Block 1061Blockgroup: 2Block 2000Block 2001Block 2002Block 2003Block 2004Block 2008Block 2009Block 2010Block 2013Block 2014Block 2043Block 2044Block 2045Block 2046Block 2047Block 2048Block 2049Block 2053Block 2054Blockgroup: 3Block 3000Block 3001Block 3002Block 3003Block 3004Block 3005Block 3006Block 3009Block 3010Block 3022Block 3024Block 3025Block 3029Block 3030Block 3031Block 3037Block 3038Blockgroup: 4Block 4040Tract: 820202Blockgroup: 1Block 1136Block 1137Block 1138Block 1152Block 1155Block 1160Block 1161Block 1162Block 1163Block 1164Block 1165Block 1166Block 1167Block 1168Block 1169Block 1170Block 1171Block 1172Block 1173Block 1174Block 1175Block 1176Block 1177Block 1178Block 1179Block 1180Block 1181Block 1182Block 1183Block 1184Block 1185Block 1186Block 1187Block 1204Block 1206Block 1207Block 1209Block 1211Block 1213Block 1215Block 1217Block 1220Block 1238Block 1239Block 1240Block 1241Block 1242Block 1243Block 1244Block 1245Block 1246Block 1247Block 1248Block 1249Block 1255Blockgroup: 2Blockgroup: 3Tract: 820603Blockgroup: 1Block 1000Block 1001Block 1002Block 1003Block 1004Block 1017Block 1018Block 1019Block 1020Block 1021Block 1022Block 1023Block 1024Block 1025Block 1026Block 1029Block 1030Block 1031Block 1032Block 1033Block 1034Block 1035Block 1036Block 1037Block 1038Block 1039Block 1040Block 1041Block 1042Block 1043Blockgroup: 2Block 2025Tract: 820606Blockgroup: 1Block 1000Block 1001Block 1002Block 1003Block 1004Block 1005Block 1006Block 1007Block 1008Block 1009Block 1010Block 1011Block 1012Block 1013Block 1014Block 1015Block 1016Block 1017Block 1018Block 1019Block 1020Block 1021Block 1022Block 1023Block 1024Block 1025Block 1026Block 1027Block 1028Block 1029Block 1030Block 1031Block 1032Block 1033Block 1034Block 1035Block 1036Block 1037Block 1038Block 1039Blockgroup: 2Block 2008Block 2009Block 2010Block 2011Block 2012Block 2013Block 2014Block 2015Block 2016Block 2017Block 2019Block 2023Block 2024Block 2036Block 2037Block 2038Block 2039Block 2040Block 2041Block 2042Block 2043Block 2044Tract: 821101Blockgroup: 3Block 3021Tract: 821600Blockgroup: 4Block 4002Tract: 822000Tract: 822101Blockgroup: 1Blockgroup: 2Block 2000Block 2001Block 2002Block 2003Block 2004Block 2005Block 2006Block 2007Block 2008Block 2009Block 2012Block 2013Block 2014Block 2015Block 2023Tract: 822102Blockgroup: 2Block 2007Block 2008Block 2009Block 2010Block 2011Block 2012Block 2013Block 2014Block 2028Block 2029Tract: 822200Blockgroup: 1Blockgroup: 2Blockgroup: 3Block 3000Block 3001Block 3002Block 3003Block 3004Block 3005Block 3006Block 3007Block 3008Block 3009Block 3010Block 3011Tract: 822301Blockgroup: 1Block 1001Block 1002Block 1003Block 1004Block 1005Block 1006Block 1007Block 1008Block 1009Block 1010Block 1011Block 1012Block 1013Block 1014Block 1015Block 1016Block 1017Block 1018Block 1019Block 1020Block 1021Block 1022Block 1023Block 1024Blockgroup: 2Blockgroup: 3Blockgroup: 4Tract: 822302Blockgroup: 1Blockgroup: 2Block 2001Block 2002Block 2003Block 2005Block 2006Block 2007Block 2016Blockgroup: 3Block 3000Block 3001Block 3002Block 3003Block 3004Block 3005Block 3006Block 3007Block 3008Block 3009Block 3010Block 3011Block 3012Block 3013Block 3014Block 3015Block 3016Block 3017Block 3018Block 3019Block 3020Block 3021Block 3022Block 3025Block 3026Block 3027Block 3028Block 3029Block 3030Block 3031Tract: 822400Blockgroup: 1Block 1012Block 1013Block 1016Block 1017Block 1018Blockgroup: 2Blockgroup: 3Blockgroup: 4Tract: 822900Blockgroup: 1Block 1023Block 1032Tract: 823001Blockgroup: 1Block 1000Block 1001Block 1002Block 1003Block 1004Block 1005Block 1006Block 1007Block 1008Block 1009Block 1010Block 1011Block 1012Block 1013Block 1014Block 1015Block 1016Block 1017Block 1018Block 1019Block 1020Block 1021Block 1022Block 1023Block 1027Block 1028Block 1029Block 1030Block 1032Block 1041Block 1042Block 1043Block 1044Block 1045Block 1046Block 1047Blockgroup: 5Block 5000Block 5001Block 5002Block 5003Block 5004Block 5005Block 5006Block 5007Block 5008Block 5009Block 5010Block 5011Block 5012Block 5013Block 5014Block 5015Block 5016Block 5017Block 5018Block 5020Block 5027Block 5028Block 5029Tract: 823702Blockgroup: 1Blockgroup: 2Block 2000Block 2001Block 2002Block 2003Block 2004Block 2005Block 2006Block 2007Block 2008Block 2009Block 2010Block 2011Block 2012Block 2013Block 2014Block 2015Block 2016Block 2017Block 2022Blockgroup: 3Block 3000Block 3001Block 3002Block 3003Block 3004Block 3005Block 3006Block 3007Block 3008Block 3009Block 3010Block 3011Block 3012Block 3013Block 3014Block 3015Block 3016Blockgroup: 4Block 4000Block 4001Block 4004Block 4008Block 4009Block 4010Block 4011Block 4012Block 4013Block 4014Block 4015Block 4016Block 4017Tract: 823703Blockgroup: 2Tract: 823704Blockgroup: 2Blockgroup: 3Tract: 823801Blockgroup: 3Block 3000Block 3001Block 3002Block 3003Block 3004Block 3005Block 3006Block 3007Block 3008Block 3009Block 3010Block 3012Block 3027Block 3028Block 3029Block 3030Block 3031Block 3032Block 3033Block 3042Tract: 842400Blockgroup: 2Block 2000Block 2001Block 2002Block 2003Block 2007Block 2008Block 2009Block 2010Block 2011Block 2012Block 2013Block 2014Block 2015Block 2016Block 2017Block 2018Block 2019Block 2020Block 2021Block 2022Block 2026Block 2027Block 2028Block 2029Blockgroup: 3 (Source: P.A. 97-6, eff. 6-3-11.)