Census tract rankings · Illinois

Most populous census tracts in Illinois

Where the most people live inside a single tract. The Census Bureau aims for 4,000 residents per tract but splits and merges aren't always synchronized with growth. Filtered to Illinois, ranked among all tracts in the state.

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Rank	Tract	County	population
#1	Tract 818	Cook, IL	13,521
#2	Tract 3301.02	Cook, IL	11,992
#3	Tract 4035.33	Madison, IL	11,109
#4	Tract 8609.06	Lake, IL	11,060
#5	Tract 8904.02	Kendall, IL	10,745
#6	Tract 8390	Cook, IL	10,391
#7	Tract 814.03	Cook, IL	10,291
#8	Tract 8507.05	Kane, IL	10,222
#9	Tract 8904.04	Kendall, IL	9,830
#10	Tract 8905.01	Kendall, IL	9,749
#11	Tract 8615.04	Lake, IL	9,338
#12	Tract 4031.21	Madison, IL	9,256
#13	Tract 8907.03	Kendall, IL	9,242
#14	Tract 39	Peoria, IL	9,238
#15	Tract 8519.07	Kane, IL	9,048
#16	Tract 8331	Cook, IL	9,022
#17	Tract 3201.01	Cook, IL	8,972
#18	Tract 208.02	Cook, IL	8,964
#19	Tract 8835.05	Will, IL	8,868
#20	Tract 5034.04	St. Clair, IL	8,854
#21	Tract 8518.01	Kane, IL	8,789
#22	Tract 8507.07	Kane, IL	8,723
#23	Tract 8435	Cook, IL	8,706
#24	Tract 8614.02	Lake, IL	8,650
#25	Tract 1.02	Grundy, IL	8,602
#26	Tract 2306	Cook, IL	8,582
#27	Tract 12.05	Champaign, IL	8,568
#28	Tract 8060.04	Cook, IL	8,508
#29	Tract 3301.03	Cook, IL	8,408
#30	Tract 8545.04	Kane, IL	8,391
#31	Tract 8073	Cook, IL	8,388
#32	Tract 8391	Cook, IL	8,355
#33	Tract 8901.05	Kendall, IL	8,343
#34	Tract 8134	Cook, IL	8,309
#35	Tract 8237.03	Cook, IL	8,277
#36	Tract 810	Cook, IL	8,264
#37	Tract 305.01	Woodford, IL	8,221
#38	Tract 34.04	Peoria, IL	8,217
#39	Tract 4027.21	Madison, IL	8,174
#40	Tract 8715.02	McHenry, IL	8,148
#41	Tract 106.03	Champaign, IL	8,139
#42	Tract 8644.02	Lake, IL	8,130
#43	Tract 8043.05	Cook, IL	8,126
#44	Tract 8708.09	McHenry, IL	8,108
#45	Tract 8810.09	Will, IL	8,089
#46	Tract 8142	Cook, IL	8,078
#47	Tract 207.02	Cook, IL	8,057
#48	Tract 8904.01	Kendall, IL	8,018
#49	Tract 8544.03	Kane, IL	7,997
#50	Tract 8051.11	Cook, IL	7,966
#51	Tract 8047.09	Cook, IL	7,952
#52	Tract 8036.08	Cook, IL	7,939
#53	Tract 11	Adams, IL	7,925
#54	Tract 8503.01	Kane, IL	7,912
#55	Tract 8642.07	Lake, IL	7,901
#56	Tract 8024.04	Cook, IL	7,892
#57	Tract 8606	Lake, IL	7,883
#58	Tract 4035.31	Madison, IL	7,859
#59	Tract 8835.10	Will, IL	7,813
#60	Tract 8300.03	Cook, IL	7,804
#61	Tract 8060.02	Cook, IL	7,800
#62	Tract 8506	Kane, IL	7,763
#63	Tract 6004.01	Monroe, IL	7,761
#64	Tract 1002	Cook, IL	7,742
#65	Tract 2801	Cook, IL	7,742
#66	Tract 31	Sangamon, IL	7,742
#67	Tract 8230.01	Cook, IL	7,730
#68	Tract 8548	Kane, IL	7,716
#69	Tract 8226.02	Cook, IL	7,709
#70	Tract 8201.01	Cook, IL	7,696
#71	Tract 8241.07	Cook, IL	7,681
#72	Tract 202	Cook, IL	7,632
#73	Tract 8047.11	Cook, IL	7,595
#74	Tract 8144	Cook, IL	7,581
#75	Tract 8241.23	Cook, IL	7,581
#76	Tract 8545.05	Kane, IL	7,554
#77	Tract 8299.02	Cook, IL	7,535
#78	Tract 4	Lee, IL	7,531
#79	Tract 2505	Cook, IL	7,509
#80	Tract 8835.16	Will, IL	7,508
#81	Tract 8835.14	Will, IL	7,490
#82	Tract 8610.11	Lake, IL	7,485
#83	Tract 8238.03	Cook, IL	7,479
#84	Tract 8521.01	Kane, IL	7,470
#85	Tract 8155	Cook, IL	7,457
#86	Tract 6304	Cook, IL	7,455
#87	Tract 8050.02	Cook, IL	7,452
#88	Tract 51.02	McLean, IL	7,447
#89	Tract 8042.02	Cook, IL	7,444
#90	Tract 321	Cook, IL	7,442
#91	Tract 8707.02	McHenry, IL	7,429
#92	Tract 8520.02	Kane, IL	7,427
#93	Tract 8428	Cook, IL	7,411
#94	Tract 14	Champaign, IL	7,407
#95	Tract 1502	Cook, IL	7,406
#96	Tract 8626.03	Lake, IL	7,374
#97	Tract 302	Perry, IL	7,374
#98	Tract 102.01	Cook, IL	7,361
#99	Tract 8611.06	Lake, IL	7,350
#100	Tract 8248	Cook, IL	7,349