(CO-99-1) County Population Estimates for July 1, 1999 and Population Change for July 1, 1998 to July 1, 1999 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 Numeric Percent Population Population 7/1/99 7/1/98 Change Change FIPS State/County Code and Area Name Estimate Estimate 1998-99 1998-99 17 Illinois........................... 12,128,370 12,069,774 58,596 0.5 17001 Adams County, IL................... 66,951 67,324 -373 -0.6 17003 Alexander County, IL............... 9,919 10,057 -138 -1.4 17005 Bond County, IL.................... 17,155 17,287 -132 -0.8 17007 Boone County, IL................... 39,560 38,748 812 2.1 17009 Brown County, IL................... 6,918 6,882 36 0.5 17011 Bureau County, IL.................. 35,355 35,477 -122 -0.3 17013 Calhoun County, IL................. 4,862 4,903 -41 -0.8 17015 Carroll County, IL................. 16,691 16,897 -206 -1.2 17017 Cass County, IL.................... 13,256 13,270 -14 -0.1 17019 Champaign County, IL............... 170,272 169,835 437 0.3 17021 Christian County, IL............... 35,797 35,800 -3 -0.0 17023 Clark County, IL................... 16,551 16,516 35 0.2 17025 Clay County, IL.................... 14,315 14,479 -164 -1.1 17027 Clinton County, IL................. 35,682 35,674 8 0.0 17029 Coles County, IL................... 51,806 51,960 -154 -0.3 17031 Cook County, IL.................... 5,192,326 5,192,396 -70 -0.0 17033 Crawford County, IL................ 20,854 20,950 -96 -0.5 17035 Cumberland County, IL.............. 11,101 11,118 -17 -0.2 17037 DeKalb County, IL.................. 86,993 85,896 1,097 1.3 17039 De Witt County, IL................. 16,676 16,737 -61 -0.4 17041 Douglas County, IL................. 19,872 19,885 -13 -0.1 17043 DuPage County, IL.................. 892,547 880,996 11,551 1.3 17045 Edgar County, IL................... 19,528 19,780 -252 -1.3 17047 Edwards County, IL................. 6,874 6,950 -76 -1.1 17049 Effingham County, IL............... 33,786 33,536 250 0.7 17051 Fayette County, IL................. 22,022 22,125 -103 -0.5 17053 Ford County, IL.................... 14,045 14,068 -23 -0.2 17055 Franklin County, IL................ 40,365 40,456 -91 -0.2 17057 Fulton County, IL.................. 38,679 38,712 -33 -0.1 17059 Gallatin County, IL................ 6,586 6,627 -41 -0.6 17061 Greene County, IL.................. 15,737 15,735 2 0.0 17063 Grundy County, IL.................. 37,181 36,748 433 1.2 17065 Hamilton County, IL................ 8,583 8,616 -33 -0.4 17067 Hancock County, IL................. 20,965 21,153 -188 -0.9 17069 Hardin County, IL.................. 4,907 4,932 -25 -0.5 17071 Henderson County, IL............... 8,593 8,621 -28 -0.3 17073 Henry County, IL................... 51,862 51,542 320 0.6 17075 Iroquois County, IL................ 31,196 31,274 -78 -0.2 17077 Jackson County, IL................. 60,651 60,851 -200 -0.3 17079 Jasper County, IL.................. 10,571 10,635 -64 -0.6 17081 Jefferson County, IL............... 39,188 39,040 148 0.4 17083 Jersey County, IL.................. 21,573 21,515 58 0.3 17085 Jo Daviess County, IL.............. 21,562 21,502 60 0.3 17087 Johnson County, IL................. 13,598 13,546 52 0.4 17089 Kane County, IL.................... 402,622 391,686 10,936 2.8 17091 Kankakee County, IL................ 102,720 102,318 402 0.4 17093 Kendall County, IL................. 53,659 51,793 1,866 3.6 17095 Knox County, IL.................... 55,373 55,606 -233 -0.4 17097 Lake County, IL.................... 617,975 608,348 9,627 1.6 17099 La Salle County, IL................ 110,248 110,193 55 0.0 17101 Lawrence County, IL................ 15,149 15,325 -176 -1.1 17103 Lee County, IL..................... 35,734 35,973 -239 -0.7 17105 Livingston County, IL.............. 39,639 39,641 -2 -0.0 17107 Logan County, IL................... 31,733 31,892 -159 -0.5 17109 McDonough County, IL............... 35,228 35,480 -252 -0.7 17111 McHenry County, IL................. 246,812 241,046 5,766 2.4 17113 McLean County, IL.................. 145,477 143,366 2,111 1.5 17115 Macon County, IL................... 113,219 113,675 -456 -0.4 17117 Macoupin County, IL................ 49,020 48,753 267 0.5 17119 Madison County, IL................. 259,434 259,185 249 0.1 17121 Marion County, IL.................. 41,813 41,932 -119 -0.3 17123 Marshall County, IL................ 12,974 12,895 79 0.6 17125 Mason County, IL................... 16,797 16,833 -36 -0.2 17127 Massac County, IL.................. 15,414 15,528 -114 -0.7 17129 Menard County, IL.................. 12,724 12,525 199 1.6 17131 Mercer County, IL.................. 17,644 17,622 22 0.1 17133 Monroe County, IL.................. 27,289 26,640 649 2.4 17135 Montgomery County, IL.............. 31,318 31,440 -122 -0.4 17137 Morgan County, IL.................. 35,158 35,412 -254 -0.7 17139 Moultrie County, IL................ 14,573 14,455 118 0.8 17141 Ogle County, IL.................... 50,954 50,522 432 0.9 17143 Peoria County, IL.................. 181,126 181,505 -379 -0.2 17145 Perry County, IL................... 21,330 21,261 69 0.3 17147 Piatt County, IL................... 16,623 16,430 193 1.2 17149 Pike County, IL.................... 17,220 17,278 -58 -0.3 17151 Pope County, IL.................... 4,811 4,777 34 0.7 17153 Pulaski County, IL................. 7,304 7,286 18 0.2 17155 Putnam County, IL.................. 5,853 5,804 49 0.8 17157 Randolph County, IL................ 33,600 33,675 -75 -0.2 17159 Richland County, IL................ 16,654 16,782 -128 -0.8 17161 Rock Island County, IL............. 147,522 147,920 -398 -0.3 17163 St. Clair County, IL............... 260,050 261,792 -1,742 -0.7 17165 Saline County, IL.................. 26,044 26,184 -140 -0.5 17167 Sangamon County, IL................ 191,306 191,487 -181 -0.1 17169 Schuyler County, IL................ 7,496 7,569 -73 -1.0 17171 Scott County, IL................... 5,614 5,616 -2 -0.0 17173 Shelby County, IL.................. 22,505 22,686 -181 -0.8 17175 Stark County, IL................... 6,282 6,315 -33 -0.5 17177 Stephenson County, IL.............. 48,778 48,868 -90 -0.2 17179 Tazewell County, IL................ 129,801 129,324 477 0.4 17181 Union County, IL................... 18,023 18,003 20 0.1 17183 Vermilion County, IL............... 83,813 84,469 -656 -0.8 17185 Wabash County, IL.................. 12,513 12,567 -54 -0.4 17187 Warren County, IL.................. 18,931 18,919 12 0.1 17189 Washington County, IL.............. 15,200 15,301 -101 -0.7 17191 Wayne County, IL................... 16,967 16,958 9 0.1 17193 White County, IL................... 15,566 15,603 -37 -0.2 17195 Whiteside County, IL............... 59,606 59,829 -223 -0.4 17197 Will County, IL.................... 478,392 460,225 18,167 3.9 17199 Williamson County, IL.............. 61,550 61,348 202 0.3 17201 Winnebago County, IL............... 268,126 267,665 461 0.2 17203 Woodford County, IL................ 35,553 35,193 360 1.0