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  Counties  

Counties ranked by 1990-2000 Population Change

2000 Census Population Compared to 1990: Illinois Counties
Ranked by 1990-2000 Population Change
Source: 2000 Census Redistricting File, PL 94-171
County 2000 Census 1990 Census 1 1990-2000 1990-2000
Total Pop Rank Total Pop Rank Change Rank % Change Rank
Illinois 12,419,293 N/A 11,430,602 N/A 988,691 N/A 8.6% N/A
Cook County 5,376,741 1 5,105,067 1 271,674 1 5.3% 29
Will County 502,266 4 357,313 4 144,953 2 40.6% 2
Lake County 644,356 3 516,418 3 127,938 3 24.8% 6
DuPage County 904,161 2 781,666 2 122,495 4 15.7% 12
Kane County 404,119 5 317,471 5 86,648 5 27.3% 5
McHenry County 260,077 7 183,241 9 76,836 6 41.9% 1
Winnebago County 278,418 6 252,913 7 25,505 7 10.1% 17
McLean County 150,433 13 129,180 14 21,253 8 16.5% 10
Kendall County 54,544 26 39,413 33 15,131 9 38.4% 3
DeKalb County 88,969 19 77,932 20 11,037 10 14.2% 13
Boone County 41,786 32 30,806 47 10,980 11 35.6% 4
Sangamon County 188,951 10 178,386 11 10,565 12 5.9% 26
Madison County 258,941 8 249,238 8 9,703 13 3.9% 36
Kankakee County 103,833 18 96,255 18 7,578 14 7.9% 21
Champaign County 179,669 12 173,025 12 6,644 15 3.8% 38
Grundy County 37,535 38 32,337 45 5,198 16 16.1% 11
Monroe County 27,619 51 22,422 52 5,197 17 23.2% 7
Ogle County 51,032 28 45,957 30 5,075 18 11.0% 16
Tazewell County 128,485 15 123,692 15 4,793 19 3.9% 37
La Salle County 111,509 17 106,913 17 4,596 20 4.3% 35
Williamson County 61,296 22 57,733 24 3,563 21 6.2% 25
Jefferson County 40,045 34 37,020 36 3,025 22 8.2% 19
Woodford County 35,469 43 32,653 44 2,816 23 8.6% 18
Bond County 17,633 64 14,991 76 2,642 24 17.6% 9
Effingham County 34,264 45 31,704 46 2,560 25 8.1% 20
Adams County 68,277 21 66,090 21 2,187 26 3.3% 40
Perry County 23,094 53 21,412 55 1,682 27 7.9% 22
Lee County 36,062 40 34,392 42 1,670 28 4.9% 32
Clinton County 35,535 41 33,944 43 1,591 29 4.7% 33
Coles County 53,196 27 51,644 26 1,552 30 3.0% 41
Johnson County 12,878 85 11,347 85 1,531 31 13.5% 14
Macoupin County 49,019 30 47,679 29 1,340 32 2.8% 43
Menard County 12,486 86 11,164 86 1,322 33 11.8% 15
Jersey County 21,668 57 20,539 58 1,129 34 5.5% 27
Brown County 6,950 95 5,836 97 1,114 35 19.1% 8
Clark County 17,008 67 15,921 73 1,087 36 6.8% 23
Crawford County 20,452 58 19,464 60 988 37 5.1% 31
Christian County 35,372 44 34,418 41 954 38 2.8% 45
Stephenson County 48,979 31 48,052 28 927 39 1.9% 50
Fayette County 21,802 56 20,893 57 909 40 4.4% 34
Piatt County 16,365 71 15,548 74 817 41 5.3% 30
Union County 18,293 63 17,619 63 674 42 3.8% 39
Rock Island County 149,374 14 148,723 13 651 43 0.4% 66
Shelby County 22,893 54 22,261 53 632 44 2.8% 42
Peoria County 183,433 11 182,827 10 606 45 0.3% 67
Cumberland County 11,253 87 10,670 87 583 46 5.5% 28
Iroquois County 31,334 48 30,787 49 547 47 1.8% 52
Jo Daviess County 22,289 55 21,821 54 468 48 2.1% 49
Whiteside County 60,653 23 60,186 23 467 49 0.8% 60
Douglas County 19,922 60 19,464 61 458 50 2.4% 48
Massac County 15,161 76 14,752 78 409 51 2.8% 44
Logan County 31,183 49 30,798 48 385 52 1.3% 56
Livingston County 39,678 35 39,301 34 377 53 1.0% 58
Moultrie County 14,287 80 13,930 81 357 54 2.6% 47
Putnam County 6,086 98 5,730 98 356 55 6.2% 24
Marshall County 13,180 83 12,846 84 334 56 2.6% 46
De Witt County 16,798 69 16,516 70 282 57 1.7% 53
Cass County 13,695 82 13,437 82 258 58 1.9% 51
Morgan County 36,616 39 36,397 37 219 59 0.6% 63
Washington County 15,148 77 14,965 77 183 60 1.2% 57
Saline County 26,733 52 26,551 51 182 61 0.7% 62
Fulton County 38,250 37 38,080 35 170 62 0.4% 65
Marion County 41,691 33 41,561 31 130 63 0.3% 68
Hamilton County 8,621 90 8,499 90 122 64 1.4% 55
Henderson County 8,213 91 8,096 91 117 65 1.4% 54
Edgar County 19,704 61 19,595 59 109 66 0.6% 64
Clay County 14,560 79 14,460 79 100 67 0.7% 61
Pope County 4,413 102 4,373 102 40 68 0.9% 59
Ford County 14,241 81 14,275 80 -34 69 -0.2% 69
Montgomery County 30,652 50 30,728 50 -76 70 -0.2% 70
Wayne County 17,151 66 17,241 66 -90 71 -0.5% 73
Scott County 5,537 99 5,644 99 -107 72 -1.9% 79
Carroll County 16,674 70 16,805 67 -131 73 -0.8% 74
Henry County 51,020 29 51,159 27 -139 74 -0.3% 71
Wabash County 12,937 84 13,111 83 -174 75 -1.3% 77
Pulaski County 7,348 92 7,523 92 -175 76 -2.3% 84
Bureau County 35,503 42 35,688 38 -185 77 -0.5% 72
Pike County 17,384 65 17,577 64 -193 78 -1.1% 76
Stark County 6,332 97 6,534 96 -202 79 -3.1% 88
Mason County 16,038 73 16,269 71 -231 80 -1.4% 78
Calhoun County 5,084 100 5,322 100 -238 81 -4.5% 93
Schuyler County 7,189 93 7,498 93 -309 82 -4.1% 92
Mercer County 16,957 68 17,290 65 -333 83 -1.9% 80
Hardin County 4,800 101 5,189 101 -389 84 -7.5% 101
Richland County 16,149 72 16,545 68 -396 85 -2.4% 86
Warren County 18,735 62 19,181 62 -446 86 -2.3% 83
Gallatin County 6,445 96 6,909 95 -464 87 -6.7% 99
Edwards County 6,971 94 7,440 94 -469 88 -6.3% 97
Jasper County 10,117 88 10,609 89 -492 89 -4.6% 94
Lawrence County 15,452 74 15,972 72 -520 90 -3.3% 90
Greene County 14,761 78 15,317 75 -556 91 -3.6% 91
Knox County 55,836 25 56,393 25 -557 92 -1.0% 75
Randolph County 33,893 46 34,583 40 -690 93 -2.0% 81
Alexander County 9,590 89 10,626 88 -1,036 94 -9.7% 102
White County 15,371 75 16,522 69 -1,151 95 -7.0% 100
Hancock County 20,121 59 21,373 56 -1,252 96 -5.9% 96
Franklin County 39,018 36 40,319 32 -1,301 97 -3.2% 89
Jackson County 59,612 24 61,067 22 -1,455 98 -2.4% 85
McDonough County 32,913 47 35,244 39 -2,331 99 -6.6% 98
Macon County 114,706 16 117,206 16 -2,500 100 -2.1% 82
Vermilion County 83,919 20 88,257 19 -4,338 101 -4.9% 95
St. Clair County 256,082 9 262,852 6 -6,770 102 -2.6% 87

1 1990 census populations are as published in 1990 census reports and thus do not include any changes published subsequently due to boundary changes or to the Count Question Resolution program.

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