(CO-99-2) County Population Estimates for July 1, 1999 and Population Change for April 1, 1990 to July 1, 1999 (includes revised April 1, 1990 Population Estimates Base) Source: Population Estimates Program, Population Division, U.S. Census Bureau, Washington, DC 20233 Contact: Demographic Call Center Staff, 1-866-758-1060 Internet Release Date: March 9, 2000 4/1/90 Numeric Percent Population Population Population 7/1/99 Estimates Change Change FIPS State/County Code and Area Name Estimate Base 1990-99 1990-99 17 Illinois........................... 12,128,370 11,430,602 697,768 6.1 17001 Adams County, IL................... 66,951 66,090 861 1.3 17003 Alexander County, IL............... 9,919 10,626 -707 -6.7 17005 Bond County, IL.................... 17,155 14,991 2,164 14.4 17007 Boone County, IL................... 39,560 30,806 8,754 28.4 17009 Brown County, IL................... 6,918 5,836 1,082 18.5 17011 Bureau County, IL.................. 35,355 35,688 -333 -0.9 17013 Calhoun County, IL................. 4,862 5,322 -460 -8.6 17015 Carroll County, IL................. 16,691 16,805 -114 -0.7 17017 Cass County, IL.................... 13,256 13,437 -181 -1.3 17019 Champaign County, IL............... 170,272 173,025 -2,753 -1.6 17021 Christian County, IL............... 35,797 34,418 1,379 4.0 17023 Clark County, IL................... 16,551 15,921 630 4.0 17025 Clay County, IL.................... 14,315 14,460 -145 -1.0 17027 Clinton County, IL................. 35,682 33,944 1,738 5.1 17029 Coles County, IL................... 51,806 51,644 162 0.3 17031 Cook County, IL.................... 5,192,326 5,105,044 87,282 1.7 17033 Crawford County, IL................ 20,854 19,464 1,390 7.1 17035 Cumberland County, IL.............. 11,101 10,670 431 4.0 17037 DeKalb County, IL.................. 86,993 77,932 9,061 11.6 17039 De Witt County, IL................. 16,676 16,516 160 1.0 17041 Douglas County, IL................. 19,872 19,464 408 2.1 17043 DuPage County, IL.................. 892,547 781,689 110,858 14.2 17045 Edgar County, IL................... 19,528 19,595 -67 -0.3 17047 Edwards County, IL................. 6,874 7,440 -566 -7.6 17049 Effingham County, IL............... 33,786 31,704 2,082 6.6 17051 Fayette County, IL................. 22,022 20,893 1,129 5.4 17053 Ford County, IL.................... 14,045 14,275 -230 -1.6 17055 Franklin County, IL................ 40,365 40,319 46 0.1 17057 Fulton County, IL.................. 38,679 38,080 599 1.6 17059 Gallatin County, IL................ 6,586 6,909 -323 -4.7 17061 Greene County, IL.................. 15,737 15,317 420 2.7 17063 Grundy County, IL.................. 37,181 32,337 4,844 15.0 17065 Hamilton County, IL................ 8,583 8,499 84 1.0 17067 Hancock County, IL................. 20,965 21,373 -408 -1.9 17069 Hardin County, IL.................. 4,907 5,189 -282 -5.4 17071 Henderson County, IL............... 8,593 8,096 497 6.1 17073 Henry County, IL................... 51,862 51,159 703 1.4 17075 Iroquois County, IL................ 31,196 30,787 409 1.3 17077 Jackson County, IL................. 60,651 61,067 -416 -0.7 17079 Jasper County, IL.................. 10,571 10,609 -38 -0.4 17081 Jefferson County, IL............... 39,188 37,020 2,168 5.9 17083 Jersey County, IL.................. 21,573 20,539 1,034 5.0 17085 Jo Daviess County, IL.............. 21,562 21,821 -259 -1.2 17087 Johnson County, IL................. 13,598 11,347 2,251 19.8 17089 Kane County, IL.................... 402,622 317,471 85,151 26.8 17091 Kankakee County, IL................ 102,720 96,255 6,465 6.7 17093 Kendall County, IL................. 53,659 39,413 14,246 36.1 17095 Knox County, IL.................... 55,373 56,393 -1,020 -1.8 17097 Lake County, IL.................... 617,975 516,418 101,557 19.7 17099 La Salle County, IL................ 110,248 106,913 3,335 3.1 17101 Lawrence County, IL................ 15,149 15,972 -823 -5.2 17103 Lee County, IL..................... 35,734 34,392 1,342 3.9 17105 Livingston County, IL.............. 39,639 39,301 338 0.9 17107 Logan County, IL................... 31,733 30,798 935 3.0 17109 McDonough County, IL............... 35,228 35,244 -16 -0.0 17111 McHenry County, IL................. 246,812 183,241 63,571 34.7 17113 McLean County, IL.................. 145,477 129,180 16,297 12.6 17115 Macon County, IL................... 113,219 117,206 -3,987 -3.4 17117 Macoupin County, IL................ 49,020 47,679 1,341 2.8 17119 Madison County, IL................. 259,434 249,238 10,196 4.1 17121 Marion County, IL.................. 41,813 41,561 252 0.6 17123 Marshall County, IL................ 12,974 12,846 128 1.0 17125 Mason County, IL................... 16,797 16,269 528 3.2 17127 Massac County, IL.................. 15,414 14,752 662 4.5 17129 Menard County, IL.................. 12,724 11,164 1,560 14.0 17131 Mercer County, IL.................. 17,644 17,290 354 2.0 17133 Monroe County, IL.................. 27,289 22,422 4,867 21.7 17135 Montgomery County, IL.............. 31,318 30,728 590 1.9 17137 Morgan County, IL.................. 35,158 36,397 -1,239 -3.4 17139 Moultrie County, IL................ 14,573 13,930 643 4.6 17141 Ogle County, IL.................... 50,954 45,957 4,997 10.9 17143 Peoria County, IL.................. 181,126 182,827 -1,701 -0.9 17145 Perry County, IL................... 21,330 21,412 -82 -0.4 17147 Piatt County, IL................... 16,623 15,548 1,075 6.9 17149 Pike County, IL.................... 17,220 17,577 -357 -2.0 17151 Pope County, IL.................... 4,811 4,373 438 10.0 17153 Pulaski County, IL................. 7,304 7,523 -219 -2.9 17155 Putnam County, IL.................. 5,853 5,730 123 2.1 17157 Randolph County, IL................ 33,600 34,583 -983 -2.8 17159 Richland County, IL................ 16,654 16,545 109 0.7 17161 Rock Island County, IL............. 147,522 148,723 -1,201 -0.8 17163 St. Clair County, IL............... 260,050 262,852 -2,802 -1.1 17165 Saline County, IL.................. 26,044 26,551 -507 -1.9 17167 Sangamon County, IL................ 191,306 178,386 12,920 7.2 17169 Schuyler County, IL................ 7,496 7,498 -2 -0.0 17171 Scott County, IL................... 5,614 5,644 -30 -0.5 17173 Shelby County, IL.................. 22,505 22,261 244 1.1 17175 Stark County, IL................... 6,282 6,534 -252 -3.9 17177 Stephenson County, IL.............. 48,778 48,052 726 1.5 17179 Tazewell County, IL................ 129,801 123,692 6,109 4.9 17181 Union County, IL................... 18,023 17,619 404 2.3 17183 Vermilion County, IL............... 83,813 88,257 -4,444 -5.0 17185 Wabash County, IL.................. 12,513 13,111 -598 -4.6 17187 Warren County, IL.................. 18,931 19,181 -250 -1.3 17189 Washington County, IL.............. 15,200 14,965 235 1.6 17191 Wayne County, IL................... 16,967 17,241 -274 -1.6 17193 White County, IL................... 15,566 16,522 -956 -5.8 17195 Whiteside County, IL............... 59,606 60,186 -580 -1.0 17197 Will County, IL.................... 478,392 357,313 121,079 33.9 17199 Williamson County, IL.............. 61,550 57,733 3,817 6.6 17201 Winnebago County, IL............... 268,126 252,913 15,213 6.0 17203 Woodford County, IL................ 35,553 32,653 2,900 8.9