| County | April 1 1990 |
July 1 1991 |
July 1 1992 |
July 1 1993 |
July 1 1994 |
July 1 1995 |
July 1 1996 |
July 1 1997 |
|---|---|---|---|---|---|---|---|---|
| Census | Estimate | Estimate | Estimate | Estimate | Estimate | Estimate | Estimate | |
| Illinois | 11,430,602 | 11,542,800 | 11,613,000 | 11,697,000 | 11,752,000 | 11,830,000 | 11,847,000 | 11,896,000 |
| Adams | 66,090 | 66,400 | 66,600 | 67,000 | 67,500 | 67,600 | 67,200 | 67,300 |
| Alexander | 10,626 | 10,600 | 10,600 | 10,500 | 10,300 | 10,300 | 10,200 | 10,000 |
| Bond | 14,991 | 15,000 | 15,200 | 15,300 | 15,200 | 16,900 | 16,900 | 17,000 |
| Boone | 30,806 | 31,800 | 32,800 | 33,700 | 35,000 | 36,300 | 37,400 | 38,100 |
| Brown | 5,836 | 5,900 | 6,200 | 6,000 | 6,300 | 6,300 | 6,600 | 6,600 |
| Bureau | 35,688 | 35,600 | 35,700 | 35,800 | 35,700 | 35,700 | 35,300 | 35,300 |
| Calhoun | 5,322 | 5,200 | 5,200 | 5,100 | 5,000 | 4,900 | 4,900 | 4,900 |
| Carroll | 16,805 | 16,600 | 16,600 | 16,600 | 16,800 | 16,800 | 16,800 | 16,800 |
| Cass | 13,437 | 13,400 | 13,300 | 13,300 | 13,300 | 13,300 | 13,200 | 13,200 |
| Champaign | 173,025 | 174,000 | 175,400 | 170,200 | 166,700 | 166,900 | 167,400 | 167,900 |
| Christian | 34,418 | 34,300 | 35,200 | 35,300 | 35,300 | 35,500 | 35,400 | 35,300 |
| Clark | 15,921 | 15,800 | 15,900 | 16,000 | 16,100 | 16,200 | 16,200 | 16,200 |
| Clay | 14,460 | 14,500 | 14,400 | 14,300 | 14,300 | 14,300 | 14,200 | 14,200 |
| Clinton | 33,944 | 34,000 | 34,300 | 34,800 | 34,900 | 35,300 | 35,200 | 35,200 |
| Coles | 51,644 | 51,700 | 51,900 | 51,900 | 52,200 | 51,400 | 51,100 | 51,000 |
| Cook | 5,105,067 | 5,136,700 | 5,138,400 | 5,146,400 | 5,141,600 | 5,141,800 | 5,115,200 | 5,104,400 |
| Crawford | 19,464 | 19,500 | 20,600 | 20,800 | 21,000 | 21,000 | 21,000 | 20,900 |
| Cumberland | 10,670 | 10,800 | 10,800 | 10,900 | 11,000 | 11,100 | 11,100 | 11,100 |
| DeKalb | 77,932 | 79,100 | 79,700 | 80,900 | 81,800 | 81,700 | 82,300 | 83,200 |
| De Witt | 16,516 | 16,600 | 16,700 | 16,700 | 16,900 | 16,900 | 16,700 | 16,700 |
| Douglas | 19,464 | 19,400 | 19,500 | 19,700 | 19,700 | 19,900 | 19,800 | 19,900 |
| DuPage | 781,666 | 800,000 | 815,000 | 831,900 | 846,600 | 858,300 | 863,900 | 874,100 |
| Edgar | 19,595 | 19,400 | 19,400 | 19,600 | 19,700 | 19,900 | 19,900 | 19,600 |
| Edwards | 7,440 | 7,400 | 7,300 | 7,300 | 7,100 | 7,100 | 7,000 | 6,900 |
| Effingham | 31,704 | 31,800 | 32,100 | 32,400 | 32,600 | 32,900 | 33,200 | 33,300 |
| Fayette | 20,893 | 20,700 | 20,700 | 20,800 | 20,800 | 21,000 | 21,200 | 21,700 |
| Ford | 14,275 | 14,000 | 14,000 | 13,900 | 13,900 | 14,000 | 14,000 | 14,000 |
| Franklin | 40,319 | 40,100 | 40,000 | 40,100 | 40,200 | 40,300 | 40,300 | 39,800 |
| Fulton | 38,080 | 37,900 | 38,400 | 38,300 | 38,300 | 38,400 | 38,700 | 38,500 |
| Gallatin | 6,909 | 6,800 | 6,800 | 6,800 | 6,700 | 6,600 | 6,600 | 6,500 |
| Greene | 15,317 | 15,200 | 15,100 | 15,400 | 15,300 | 15,400 | 15,300 | 15,300 |
| Grundy | 32,337 | 33,300 | 33,800 | 34,300 | 34,700 | 35,100 | 35,600 | 36,100 |
| Hamilton | 8,499 | 8,500 | 8,400 | 8,400 | 8,400 | 8,500 | 8,500 | 8,500 |
| Hancock | 21,373 | 21,400 | 21,500 | 21,500 | 21,300 | 21,200 | 21,000 | 20,800 |
| Hardin | 5,189 | 5,100 | 5,200 | 5,200 | 5,100 | 5,100 | 5,000 | 4,900 |
| Henderson | 8,096 | 8,200 | 8,300 | 8,400 | 8,300 | 8,500 | 8,500 | 8,600 |
| Henry | 51,159 | 51,100 | 51,300 | 51,000 | 51,200 | 51,500 | 51,300 | 51,000 |
| Iroquois | 30,787 | 30,900 | 31,200 | 31,400 | 31,300 | 31,300 | 31,400 | 31,300 |
| Jackson | 61,067 | 60,900 | 60,900 | 61,600 | 61,200 | 60,900 | 60,500 | 60,100 |
| Jasper | 10,609 | 10,600 | 10,600 | 10,600 | 10,600 | 10,600 | 10,500 | 10,400 |
| Jefferson | 37,020 | 36,900 | 36,900 | 38,000 | 38,400 | 38,700 | 38,600 | 38,500 |
| Jersey | 20,539 | 20,800 | 21,000 | 21,200 | 21,000 | 21,300 | 21,400 | 21,500 |
| Jo Daviess | 21,821 | 22,000 | 21,900 | 22,200 | 22,200 | 22,000 | 21,900 | 21,800 |
| Johnson | 11,347 | 11,500 | 11,800 | 11,700 | 12,100 | 12,800 | 13,000 | 13,100 |
| Kane | 317,471 | 326,300 | 332,500 | 340,800 | 348,200 | 360,200 | 369,900 | 380,700 |
| Kankakee | 96,255 | 97,400 | 98,800 | 100,400 | 101,100 | 101,200 | 101,200 | 101,400 |
| Kendall | 39,413 | 40,500 | 41,300 | 42,500 | 44,100 | 45,600 | 47,900 | 49,900 |
| Knox | 56,393 | 56,200 | 56,300 | 56,400 | 56,000 | 55,900 | 55,500 | 55,300 |
| Lake | 516,418 | 531,100 | 540,300 | 550,900 | 561,600 | 572,600 | 585,000 | 597,500 |
| La Salle | 106,913 | 107,400 | 107,800 | 108,500 | 108,600 | 109,100 | 109,200 | 109,300 |
| Lawrence | 15,972 | 15,900 | 15,800 | 15,800 | 15,800 | 15,800 | 15,600 | 15,300 |
| Lee | 34,392 | 34,500 | 34,900 | 35,200 | 35,500 | 35,900 | 35,800 | 35,900 |
| Livingston | 39,301 | 39,200 | 39,400 | 39,700 | 39,800 | 40,000 | 39,200 | 39,300 |
| Logan | 30,798 | 30,500 | 30,900 | 30,900 | 30,900 | 31,200 | 30,900 | 30,900 |
| McDonough | 35,244 | 35,000 | 34,900 | 35,000 | 35,200 | 33,900 | 33,600 | 33,500 |
| McHenry | 183,241 | 192,400 | 199,500 | 208,300 | 216,500 | 225,400 | 231,000 | 236,900 |
| McLean | 129,180 | 131,800 | 133,200 | 135,600 | 136,800 | 138,900 | 139,400 | 140,900 |
| Macon | 117,206 | 117,700 | 117,900 | 117,300 | 116,500 | 116,200 | 114,900 | 113,800 |
| Macoupin | 47,679 | 47,900 | 47,800 | 48,000 | 48,200 | 48,400 | 48,500 | 48,400 |
| Madison | 249,238 | 251,500 | 252,900 | 254,200 | 255,000 | 256,300 | 256,200 | 257,400 |
| Marion | 41,561 | 41,500 | 41,600 | 41,700 | 41,600 | 41,800 | 41,800 | 41,700 |
| Marshall | 12,846 | 12,800 | 12,800 | 12,700 | 12,600 | 12,700 | 12,600 | 12,600 |
| Mason | 16,269 | 16,400 | 16,500 | 16,600 | 16,600 | 16,600 | 16,500 | 16,600 |
| Massac | 14,752 | 14,700 | 14,900 | 15,100 | 15,100 | 15,100 | 15,100 | 15,300 |
| Menard | 11,164 | 11,300 | 11,400 | 11,700 | 11,900 | 12,100 | 12,300 | 12,400 |
| Mercer | 17,290 | 17,300 | 17,300 | 17,300 | 17,400 | 17,500 | 17,500 | 17,500 |
| Monroe | 22,422 | 22,900 | 23,400 | 23,800 | 24,200 | 24,700 | 25,300 | 25,800 |
| Montgomery | 30,728 | 30,600 | 30,900 | 30,500 | 30,700 | 30,700 | 30,600 | 31,000 |
| Morgan | 36,397 | 36,400 | 36,300 | 36,500 | 36,400 | 36,900 | 36,600 | 36,200 |
| Moultrie | 13,930 | 13,900 | 14,000 | 13,900 | 13,900 | 14,000 | 14,100 | 14,200 |
| Ogle | 45,957 | 46,900 | 47,500 | 48,200 | 48,800 | 49,300 | 49,800 | 50,000 |
| Peoria | 182,827 | 183,800 | 183,700 | 183,500 | 182,800 | 183,400 | 182,700 | 182,000 |
| Perry | 21,412 | 21,300 | 21,300 | 21,400 | 21,200 | 21,200 | 21,300 | 21,200 |
| Piatt | 15,548 | 15,600 | 15,700 | 16,000 | 16,000 | 16,200 | 16,200 | 16,400 |
| Pike | 17,577 | 17,400 | 17,400 | 17,400 | 17,100 | 17,100 | 17,000 | 17,300 |
| Pope | 4,373 | 4,400 | 4,400 | 4,500 | 4,500 | 4,600 | 4,600 | 4,600 |
| Pulaski | 7,523 | 7,400 | 7,400 | 7,400 | 7,300 | 7,300 | 7,200 | 7,100 |
| Putnam | 5,730 | 5,800 | 5,800 | 5,700 | 5,800 | 5,800 | 5,800 | 5,900 |
| Randolph | 34,583 | 34,600 | 34,300 | 34,100 | 34,400 | 34,200 | 33,900 | 33,600 |
| Richland | 16,545 | 16,600 | 16,700 | 16,600 | 16,700 | 16,600 | 16,600 | 16,700 |
| Rock Island | 148,723 | 149,700 | 150,100 | 150,500 | 149,800 | 149,600 | 148,400 | 148,100 |
| St. Clair | 262,852 | 262,300 | 262,800 | 265,800 | 265,600 | 265,600 | 264,700 | 263,900 |
| Saline | 26,551 | 26,300 | 26,500 | 26,700 | 26,500 | 26,200 | 26,200 | 25,900 |
| Sangamon | 178,386 | 179,900 | 181,400 | 182,800 | 183,500 | 184,200 | 184,300 | 184,200 |
| Schuyler | 7,498 | 7,500 | 7,500 | 7,500 | 7,600 | 7,700 | 7,600 | 7,600 |
| Scott | 5,644 | 5,600 | 5,600 | 5,600 | 5,600 | 5,600 | 5,500 | 5,500 |
| Shelby | 22,261 | 22,300 | 22,300 | 22,300 | 22,300 | 22,400 | 22,400 | 22,400 |
| Stark | 6,534 | 6,400 | 6,400 | 6,400 | 6,300 | 6,300 | 6,300 | 6,200 |
| Stephenson | 48,052 | 48,100 | 48,400 | 48,700 | 48,900 | 48,900 | 48,800 | 48,900 |
| Tazewell | 123,692 | 124,600 | 125,500 | 125,900 | 126,500 | 129,000 | 128,900 | 129,200 |
| Union | 17,619 | 17,600 | 17,800 | 17,800 | 17,800 | 17,800 | 17,800 | 17,700 |
| Vermilion | 88,257 | 87,900 | 87,900 | 87,700 | 87,600 | 86,300 | 84,900 | 84,800 |
| Wabash | 13,111 | 13,100 | 13,000 | 13,100 | 12,900 | 12,900 | 12,600 | 12,600 |
| Warren | 19,181 | 19,200 | 19,200 | 19,000 | 18,900 | 19,000 | 18,700 | 18,700 |
| Washington | 14,965 | 14,800 | 14,700 | 14,800 | 14,900 | 15,000 | 15,000 | 15,100 |
| Wayne | 17,241 | 16,900 | 16,900 | 16,900 | 17,000 | 17,000 | 16,800 | 16,800 |
| White | 16,522 | 16,300 | 16,100 | 15,900 | 15,700 | 15,700 | 15,500 | 15,400 |
| Whiteside | 60,186 | 60,600 | 60,700 | 60,600 | 60,600 | 60,600 | 60,500 | 60,200 |
| Will | 357,313 | 367,300 | 374,600 | 387,000 | 399,600 | 415,100 | 429,400 | 445,000 |
| Williamson | 57,733 | 57,800 | 58,600 | 59,100 | 59,100 | 60,300 | 60,200 | 60,700 |
| Winnebago | 252,913 | 257,000 | 259,500 | 262,000 | 263,100 | 264,600 | 265,400 | 266,600 |
| Woodford | 32,653 | 33,300 | 33,400 | 33,600 | 33,800 | 34,300 | 34,400 | 34,500 |
Source: Illinois Department of Public Health, Illinois Center for Health Statistics; and U.S. Bureau of the Census
  |
Illinois Department
of Public Health 535 West Jefferson Street Springfield, Illinois 62761 Phone 217-782-4977 Fax 217-782-3987 TTY 800-547-0466 Questions or Comments |