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Illinois Counties

Counties
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County Basics

The tables below feature information about every in . (Note: Louisiana is divided into parishes, Alaska into boroughs.) The first table lists each ’s name, the seat, area in square miles, area in square kilometers (km), population density (number of people per square mile), density per square kilometer (km) and population. County (or parish, borough) seats that also serve as state capitals are highlighted in yellow. The second table focuses on race.

You can see this information for all fifty states at Reference > North America > USA > Counties. Also, see the Counties home page.
See a map of ’s counties: Resizeable Pop-Up | Link
Name Seat Area (km) Density (km) Pop(2000) Pop(1990)
Adams Quincy 857 2,219 77 30 68,277 66,090
Alexander Cairo 236 612 45 17 9,590 10,626
Bond Greenville 380 985 39 15 17,633 14,991
Boone Belvidere 281 729 110 42 41,786 30,806
Brown Mt. Sterling 306 792 19 7 6,950 5,836
Bureau Princeton 869 2,250 41 16 35,503 35,688
Calhoun Hardin 254 658 21 8 5,084 5,322
Carroll Mt. Carroll 444 1,151 38 15 16,674 16,805
Cass Virginia 376 974 36 14 13,695 13,437
Champaign Urbana 997 2,583 174 67 179,669 173,025
Christian Taylorville 709 1,837 49 19 35,372 34,418
Clark Marshall 502 1,299 32 12 17,008 15,921
Clay Louisville 469 1,215 31 12 14,560 14,460
Clinton Carlyle 474 1,228 72 28 35,535 33,944
Coles Charleston 508 1,317 102 39 53,196 51,644
Cook Chicago 946 2,449 5,398 2,084 5,376,741 5,105,067
Crawford Robinson 444 1,149 44 17 20,452 19,464
Cumberland Toledo 346 896 31 12 11,253 10,670
DeKalb Sycamore 634 1,643 123 47 88,969 77,932
De Witt Clinton 398 1,030 42 16 16,798 16,516
Douglas Tuscola 417 1,080 47 18 19,922 19,464
Du Page Wheaton 334 866 2,337 902 904,161 781,666
Edgar Paris 624 1,615 31 12 19,704 19,595
Edwards Albion 222 576 34 13 6,971 7,440
Effingham Effingham 479 1,240 66 26 34,264 31,704
Fayette Vandalia 717 1,856 29 11 21,802 20,893
Ford Paxton 486 1,259 29 11 14,241 14,275
Franklin Benton 412 1,067 98 38 39,018 40,319
Fulton Lewistown 866 2,242 44 17 38,250 38,080
Gallatin Shawneetown 324 839 21 8 6,445 6,909
Greene Carrollton 543 1,407 28 11 14,761 15,317
Grundy Morris 420 1,088 77 30 37,535 32,337
Hamilton McLeansboro 435 1,127 20 8 8,621 8,499
Hancock Carthage 795 2,058 27 10 20,121 21,373
Hardin Elizabethtown 178 462 29 11 4,800 5,189
Henderson Oquawka 379 981 21 8 8,213 8,096
Henry Cambridge 823 2,132 62 24 51,020 51,159
Iroquois Watseka 1,117 2,892 28 11 31,334 30,787
Jackson Murphysboro 588 1,523 104 40 59,612 61,067
Jasper Newton 494 1,281 22 8 10,117 10,609
Jefferson Mt. Vernon 571 1,479 65 25 40,045 37,020
Jersey Jerseyville 369 956 56 22 21,668 20,539
Johnson Vienna 346 896 33 13 12,878 11,347
Jo Daviess Galena 601 1,557 36 14 22,289 21,821
Kane Geneva 521 1,349 610 235 404,119 317,471
Kankakee Kankakee 678 1,755 142 55 103,833 96,255
Kendall Yorkville 321 831 123 48 54,544 39,413
Knox Galesburg 716 1,855 79 30 55,836 56,393
Lake Waukegan 448 1,160 1,153 445 644,356 516,418
Lawrence Lawrenceville 372 964 43 17 15,452 15,972
La Salle Ottawa 1,135 2,940 94 36 111,509 106,913
Lee Dixon 725 1,879 47 18 36,062 34,392
Livingston Pontiac 1,044 2,704 38 15 39,678 39,301
Logan Lincoln 618 1,601 50 19 31,183 30,798
Macon Decatur 581 1,504 202 78 114,706 117,206
Macoupin Carlinville 864 2,237 55 21 49,019 47,679
Madison Edwardsville 725 1,878 344 133 258,941 249,238
Marion Salem 572 1,482 73 28 41,691 41,561
Marshall Lacon 386 1,000 33 13 13,180 12,846
Mason Havana 539 1,396 30 12 16,038 16,269
Massac Metropolis 239 619 62 24 15,161 14,752
McDonough Macomb 589 1,526 60 23 32,913 35,244
McHenry Woodstock 604 1,565 303 117 260,077 183,241
McLean Bloomington 1,184 3,066 109 42 150,433 129,180
Menard Petersburg 314 814 36 14 12,486 11,164
Mercer Aledo 561 1,453 31 12 16,957 17,290
Monroe Waterloo 388 1,006 58 22 27,619 22,422
Montgomery Hillsboro 704 1,823 44 17 30,652 30,728
Morgan Jacksonville 569 1,473 64 25 36,616 36,397
Moultrie Sullivan 336 869 42 16 14,287 13,930
Ogle Oregon 759 1,966 61 23 51,032 45,957
Peoria Peoria 620 1,605 295 114 183,433 182,827
Perry Pinckneyville 441 1,142 49 19 23,094 21,412
Piatt Monticello 440 1,140 35 14 16,365 15,548
Pike Pittsfield 830 2,151 21 8 17,384 17,577
Pope Golconda 371 961 12 5 4,413 4,373
Pulaski Mound City 201 520 38 15 7,348 7,523
Putnam Hennepin 160 414 36 14 6,086 5,730
Randolph Chester 578 1,498 60 23 33,893 34,583
Richland Olney 360 933 46 18 16,149 16,545
Rock Island Rock Island 427 1,105 349 135 149,374 148,723
Saline Harrisburg 383 993 69 27 26,733 26,551
Sangamon Springfield 868 2,249 205 79 188,951 178,386
Schuyler Rushville 437 1,133 17 7 7,189 7,498
Scott Winchester 251 650 23 9 5,537 5,644
Shelby Shelbyville 759 1,965 29 11 22,893 22,261
St. Clair Belleville 664 1,720 396 153 256,082 262,852
Stark Toulon 288 746 23 9 6,332 6,534
Stephenson Freeport 564 1,462 85 33 48,979 48,052
Tazewell Pekin 649 1,681 191 74 128,485 123,692
Union Jonesboro 416 1,078 42 16 18,293 17,619
Vermilion Danville 899 2,329 98 38 83,919 88,257
Wabash Mt. Carmel 224 579 59 23 12,937 13,111
Warren Monmouth 543 1,405 35 14 18,735 19,181
Washington Nashville 563 1,457 27 10 15,148 14,965
Wayne Fairfield 714 1,849 24 9 17,151 17,241
White Carmi 495 1,282 33 13 15,371 16,522
Whiteside Morrison 685 1,774 88 34 60,653 60,186
Will Joliet 837 2,169 427 165 502,266 357,313
Williamson Marion 424 1,099 136 53 61,296 57,733
Winnebago Rockford 514 1,331 492 190 278,418 252,913
Woodford Eureka 528 1,368 62 24 35,469 32,653
(Source: U.S. Census Bureau)

Race

The table below lists the population of various ethnic and cultural groups in : Native American (American Indian, Eskimo and Aleut), white (Caucasian), black (African American), Asian American, Pacific Islander, “Some Other Race,” people whose ancestry includes two or more races, and Hispanic.
County Native White Black Asian PI Other Race2 Hisp
Adams 109 64,932 2,094 272 8 212 650 567
Alexander 27 6,040 3,347 35 2 52 87 138
Bond 81 16,000 1,306 46 8 65 127 253
Boone 122 37,643 375 208 5 2,789 644 5,219
Brown 6 5,580 1,265 9 5 47 38 273
Bureau 61 34,365 116 182 10 455 314 1,732
Calhoun 16 5,023 2 9 0 8 26 32
Carroll 40 16,164 91 68 5 136 170 340
Cass 23 13,000 61 38 4 457 112 1,162
Champaign 433 141,536 20,045 11,592 72 2,416 3,575 5,203
Christian 57 34,077 758 132 11 167 170 345
Clark 30 16,801 34 23 5 14 101 54
Clay 33 14,345 16 76 2 30 58 88
Clinton 56 33,470 1,391 118 11 297 192 570
Coles 105 50,734 1,215 419 24 219 480 737
Cook 15,496 3,025,760 1,405,361 260,170 2,561 531,170 136,223 1,071,740
Crawford 56 19,139 927 71 2 112 145 351
Cumberland 22 11,123 12 17 2 26 51 68
DeKalb 197 78,704 4,084 2,087 58 2,440 1,399 5,830
De Witt 32 16,430 82 47 4 84 119 213
Douglas 32 19,375 60 51 2 263 139 690
Du Page 1,520 759,924 27,600 71,252 217 28,166 15,482 81,366
Edgar 37 19,137 362 37 2 50 79 154
Edwards 6 6,892 10 28 3 6 26 32
Effingham 61 33,804 56 108 4 75 156 252
Fayette 26 20,499 1,064 37 4 55 117 174
Ford 14 13,982 35 46 0 57 107 176
Franklin 85 38,485 59 70 5 56 258 249
Fulton 68 36,384 1,378 93 6 111 210 478
Gallatin 46 6,340 17 4 2 6 30 56
Greene 35 14,475 110 16 3 33 89 77
Grundy 90 36,442 71 114 4 487 327 1,552
Hamilton 22 8,470 58 11 1 12 47 55
Hancock 36 19,855 41 46 5 26 112 105
Hardin 2 4,580 132 24 6 23 33 51
Henderson 9 8,090 21 8 3 15 67 72
Henry 52 49,077 583 127 6 669 506 1,467
Iroquois 54 30,059 223 94 6 650 248 1,217
Jackson 184 48,158 7,759 1,806 35 596 1,074 1,443
Jasper 7 10,031 8 19 2 19 31 48
Jefferson 83 35,990 3,134 189 3 180 466 531
Jersey 44 21,263 114 55 7 33 152 162
Johnson 35 10,756 1,825 17 5 138 102 368
Jo Daviess 23 21,991 44 36 1 75 119 342
Kane 1,255 320,340 23,279 7,296 144 42,870 8,935 95,924
Kankakee 184 82,954 16,065 705 19 2,475 1,431 4,959
Kendall 105 50,658 718 480 12 1,842 729 4,086
Knox 105 50,175 3,512 383 8 876 777 1,896
Lake 1,801 516,189 44,741 25,105 308 43,283 12,929 92,716
Lawrence 21 15,139 118 18 0 41 115 137
La Salle 191 105,896 1,723 598 26 1,908 1,167 5,791
Lee 41 33,422 1,772 202 8 277 340 1,147
Livingston 66 36,629 2,053 123 2 486 319 1,056
Logan 49 28,593 2,045 171 4 129 192 503
Macon 199 95,760 16,130 657 23 379 1,558 1,120
Macoupin 109 48,034 400 89 14 72 301 305
Madison 700 233,645 18,935 1,542 54 1,269 2,796 3,925
Marion 90 39,209 1,598 237 16 93 448 378
Marshall 29 12,941 46 33 1 33 97 138
Mason 42 15,849 19 33 0 15 80 80
Massac 31 14,034 831 39 0 50 176 123
McDonough 47 30,568 1,138 664 12 154 330 488
McHenry 445 244,240 1,523 3,782 55 7,211 2,821 19,602
McLean 245 134,170 9,305 3,087 49 1,524 2,053 3,833
Menard 27 12,310 48 21 0 31 49 94
Mercer 21 16,680 50 29 1 60 116 216
Monroe 52 27,279 14 86 1 50 137 203
Montgomery 63 29,083 1,143 70 9 144 140 326
Morgan 67 33,811 1,961 170 3 256 348 496
Moultrie 24 14,131 28 14 7 16 67 68
Ogle 123 48,659 224 213 20 1,251 542 3,066
Peoria 411 145,602 29,532 3,041 51 1,734 3,062 3,827
Perry 53 20,681 1,851 64 10 252 183 406
Piatt 13 16,173 39 21 3 23 93 101
Pike 30 16,929 260 41 5 21 98 87
Pope 35 4,117 166 12 0 20 63 40
Pulaski 10 4,888 2,278 68 0 20 84 107
Putnam 21 5,941 38 16 0 38 32 171
Randolph 53 30,068 3,147 81 14 274 256 521
Richland 20 15,852 47 92 7 35 96 124
Rock Island 410 127,742 11,260 1,524 45 5,612 2,781 12,791
Saline 78 25,166 1,085 53 4 92 255 258
Sangamon 397 165,179 18,237 2,082 53 709 2,294 2,000
Schuyler 11 7,103 16 8 1 15 35 39
Scott 8 5,507 2 7 0 2 11 10
Shelby 31 22,651 35 49 1 31 95 110
St. Clair 665 173,970 73,666 2,322 116 2,040 3,303 5,604
Stark 12 6,245 4 12 0 9 50 54
Stephenson 74 43,733 3,761 334 22 307 748 747
Tazewell 322 125,142 1,131 665 10 341 874 1,331
Union 68 17,612 150 51 3 218 191 481
Vermilion 184 72,032 8,882 498 17 1,212 1,094 2,504
Wabash 22 12,660 51 58 6 33 107 95
Warren 33 17,910 298 63 19 206 206 507
Washington 34 14,933 50 28 4 20 79 108
Wayne 34 16,930 26 58 1 10 92 103
White 53 15,097 40 25 1 24 131 103
Whiteside 158 56,294 616 254 4 2,471 856 5,347
Will 1,038 411,027 52,509 11,125 162 18,219 8,186 43,768
Williamson 167 58,441 1,527 308 19 233 601 763
Winnebago 797 229,595 29,317 4,780 101 8,648 5,180 19,206
Woodford 59 34,928 89 109 4 51 229 241
(Source: U.S. Census Bureau)


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