| Annual Estimates of Housing Units for Counties in Illinois: April 1, 2000 to July 1, 2006 | |||||||||
| Geographic Area | Housing Unit Estimates | April 1, 2000 | |||||||
| July 1, 2006 | July 1, 2005 | July 1, 2004 | July 1, 2003 | July 1, 2002 | July 1, 2001 | July 1, 2000 | Estimates Base | Census | |
| Illinois | 5,199,589 | 5,144,625 | 5,094,236 | 5,040,367 | 4,988,057 | 4,941,568 | 4,897,149 | 4,885,744 | 4,885,615 |
| Adams County | 30,252 | 30,195 | 30,060 | 29,883 | 29,726 | 29,558 | 29,426 | 29,386 | 29,386 |
| Alexander County | 4,630 | 4,637 | 4,624 | 4,626 | 4,628 | 4,614 | 4,597 | 4,591 | 4,591 |
| Bond County | 7,127 | 7,035 | 6,972 | 6,909 | 6,865 | 6,817 | 6,715 | 6,689 | 6,690 |
| Boone County | 18,253 | 17,758 | 17,206 | 16,645 | 16,304 | 15,845 | 15,500 | 15,413 | 15,414 |
| Brown County | 2,529 | 2,534 | 2,517 | 2,508 | 2,499 | 2,488 | 2,463 | 2,456 | 2,456 |
| Bureau County | 15,553 | 15,525 | 15,489 | 15,457 | 15,441 | 15,417 | 15,349 | 15,331 | 15,331 |
| Calhoun County | 2,814 | 2,798 | 2,770 | 2,742 | 2,719 | 2,695 | 2,684 | 2,681 | 2,681 |
| Carroll County | 8,253 | 8,193 | 8,148 | 8,105 | 8,063 | 8,009 | 7,958 | 7,945 | 7,945 |
| Cass County | 5,955 | 5,888 | 5,805 | 5,796 | 5,795 | 5,793 | 5,786 | 5,784 | 5,784 |
| Champaign County | 82,392 | 80,549 | 79,634 | 78,524 | 77,202 | 76,461 | 75,518 | 75,280 | 75,280 |
| Christian County | 15,372 | 15,341 | 15,299 | 15,220 | 15,141 | 15,080 | 15,010 | 14,992 | 14,992 |
| Clark County | 8,055 | 8,064 | 8,030 | 7,979 | 7,933 | 7,886 | 7,833 | 7,816 | 7,816 |
| Clay County | 6,566 | 6,570 | 6,547 | 6,511 | 6,481 | 6,447 | 6,407 | 6,394 | 6,394 |
| Clinton County | 14,879 | 14,666 | 14,481 | 14,284 | 14,112 | 13,984 | 13,850 | 13,802 | 13,805 |
| Coles County | 23,315 | 23,314 | 23,153 | 23,068 | 23,020 | 22,905 | 22,798 | 22,768 | 22,768 |
| Cook County | 2,157,542 | 2,143,661 | 2,134,379 | 2,123,923 | 2,112,912 | 2,104,817 | 2,097,822 | 2,096,066 | 2,096,121 |
| Crawford County | 8,973 | 8,982 | 8,954 | 8,908 | 8,869 | 8,833 | 8,797 | 8,785 | 8,785 |
| Cumberland County | 5,053 | 5,061 | 5,032 | 4,993 | 4,955 | 4,921 | 4,887 | 4,876 | 4,876 |
| De Witt County | 7,504 | 7,480 | 7,451 | 7,416 | 7,372 | 7,332 | 7,292 | 7,282 | 7,282 |
| DeKalb County | 37,786 | 36,428 | 35,659 | 34,843 | 34,256 | 33,630 | 33,117 | 32,988 | 32,988 |
| Douglas County | 8,298 | 8,256 | 8,220 | 8,158 | 8,088 | 8,051 | 8,015 | 8,005 | 8,005 |
| DuPage County | 356,189 | 353,214 | 350,474 | 347,796 | 344,435 | 340,350 | 336,637 | 335,708 | 335,621 |
| Edgar County | 8,818 | 8,826 | 8,806 | 8,771 | 8,744 | 8,712 | 8,633 | 8,611 | 8,611 |
| Edwards County | 3,304 | 3,309 | 3,295 | 3,272 | 3,249 | 3,228 | 3,206 | 3,199 | 3,199 |
| Effingham County | 14,531 | 14,477 | 14,380 | 14,270 | 14,173 | 14,084 | 13,988 | 13,959 | 13,959 |
| Fayette County | 9,314 | 9,325 | 9,275 | 9,222 | 9,171 | 9,125 | 9,070 | 9,052 | 9,053 |
| Ford County | 6,223 | 6,196 | 6,173 | 6,153 | 6,129 | 6,098 | 6,068 | 6,060 | 6,060 |
| Franklin County | 18,416 | 18,428 | 18,393 | 18,316 | 18,255 | 18,190 | 18,129 | 18,109 | 18,105 |
| Fulton County | 16,444 | 16,399 | 16,372 | 16,350 | 16,323 | 16,291 | 16,251 | 16,240 | 16,240 |
| Gallatin County | 3,192 | 3,197 | 3,180 | 3,153 | 3,127 | 3,104 | 3,079 | 3,071 | 3,071 |
| Greene County | 6,509 | 6,517 | 6,487 | 6,449 | 6,410 | 6,376 | 6,343 | 6,332 | 6,332 |
| Grundy County | 17,954 | 17,369 | 16,606 | 15,895 | 15,526 | 15,289 | 15,091 | 15,040 | 15,040 |
| Hamilton County | 4,091 | 4,099 | 4,088 | 4,069 | 4,051 | 4,022 | 3,993 | 3,983 | 3,983 |
| Hancock County | 9,210 | 9,215 | 9,175 | 9,126 | 9,075 | 8,968 | 8,922 | 8,907 | 8,909 |
| Hardin County | 2,540 | 2,545 | 2,539 | 2,527 | 2,517 | 2,508 | 2,498 | 2,494 | 2,494 |
| Henderson County | 4,258 | 4,238 | 4,213 | 4,190 | 4,167 | 4,148 | 4,131 | 4,126 | 4,126 |
| Henry County | 21,671 | 21,598 | 21,542 | 21,502 | 21,443 | 21,353 | 21,286 | 21,269 | 21,270 |
| Iroquois County | 13,606 | 13,580 | 13,524 | 13,487 | 13,462 | 13,416 | 13,373 | 13,362 | 13,362 |
| Jackson County | 27,885 | 27,815 | 27,669 | 27,457 | 27,238 | 27,079 | 26,895 | 26,841 | 26,844 |
| Jasper County | 4,455 | 4,462 | 4,437 | 4,402 | 4,367 | 4,336 | 4,305 | 4,294 | 4,294 |
| Jefferson County | 17,543 | 17,539 | 17,449 | 17,373 | 17,297 | 17,181 | 17,033 | 16,990 | 16,990 |
| Jersey County | 9,686 | 9,490 | 9,327 | 9,221 | 9,137 | 9,039 | 8,943 | 8,918 | 8,918 |
| Jo Daviess County | 13,025 | 12,855 | 12,648 | 12,485 | 12,282 | 12,159 | 12,035 | 12,003 | 12,003 |
| Johnson County | 5,274 | 5,268 | 5,234 | 5,187 | 5,146 | 5,105 | 5,062 | 5,047 | 5,046 |
| Kane County | 168,179 | 163,521 | 159,290 | 154,443 | 149,730 | 145,024 | 140,178 | 138,996 | 138,998 |
| Kankakee County | 43,612 | 42,900 | 42,350 | 41,776 | 41,398 | 41,026 | 40,694 | 40,610 | 40,610 |
| Kendall County | 30,879 | 28,145 | 25,929 | 24,308 | 22,617 | 21,080 | 19,833 | 19,507 | 19,519 |
| Knox County | 23,981 | 23,976 | 23,969 | 23,974 | 23,958 | 23,792 | 23,733 | 23,718 | 23,717 |
| LaSalle County | 48,933 | 48,547 | 48,066 | 47,679 | 47,386 | 47,058 | 46,587 | 46,462 | 46,438 |
| Lake County | 250,509 | 246,749 | 242,581 | 238,546 | 234,664 | 230,825 | 226,975 | 226,010 | 225,919 |
| Lawrence County | 7,169 | 7,183 | 7,160 | 7,124 | 7,089 | 7,060 | 7,026 | 7,014 | 7,014 |
| Lee County | 14,733 | 14,668 | 14,618 | 14,553 | 14,507 | 14,422 | 14,333 | 14,310 | 14,310 |
| Livingston County | 15,626 | 15,570 | 15,525 | 15,476 | 15,420 | 15,385 | 15,314 | 15,296 | 15,297 |
| Logan County | 12,023 | 12,012 | 11,991 | 11,912 | 11,897 | 11,883 | 11,876 | 11,874 | 11,872 |
| Macon County | 51,801 | 51,619 | 51,379 | 50,973 | 50,696 | 50,577 | 50,309 | 50,241 | 50,241 |
| Macoupin County | 22,063 | 21,969 | 21,826 | 21,606 | 21,454 | 21,306 | 21,147 | 21,097 | 21,097 |
| Madison County | 116,407 | 115,179 | 113,913 | 112,484 | 111,175 | 110,148 | 109,190 | 108,948 | 108,942 |
| Marion County | 18,441 | 18,443 | 18,406 | 18,307 | 18,199 | 18,115 | 18,045 | 18,022 | 18,022 |
| Marshall County | 6,109 | 6,109 | 6,083 | 6,064 | 5,977 | 5,924 | 5,900 | 5,892 | 5,914 |
| Mason County | 7,098 | 7,102 | 7,095 | 7,078 | 7,053 | 7,038 | 7,033 | 7,032 | 7,033 |
| Massac County | 7,145 | 7,123 | 7,065 | 7,041 | 7,022 | 6,994 | 6,962 | 6,951 | 6,951 |
| McDonough County | 14,134 | 14,120 | 14,039 | 13,768 | 13,651 | 13,520 | 13,342 | 13,293 | 13,289 |
| McHenry County | 112,384 | 109,488 | 106,521 | 103,297 | 99,742 | 96,561 | 93,641 | 92,910 | 92,908 |
| McLean County | 67,268 | 66,522 | 65,492 | 63,991 | 62,431 | 61,003 | 60,180 | 59,973 | 59,972 |
| Menard County | 5,662 | 5,614 | 5,569 | 5,497 | 5,443 | 5,375 | 5,303 | 5,285 | 5,285 |
| Mercer County | 7,315 | 7,238 | 7,214 | 7,186 | 7,160 | 7,147 | 7,117 | 7,109 | 7,109 |
| Monroe County | 12,553 | 12,228 | 11,927 | 11,610 | 11,301 | 11,058 | 10,811 | 10,749 | 10,749 |
| Montgomery County | 12,694 | 12,687 | 12,659 | 12,686 | 12,638 | 12,580 | 12,538 | 12,524 | 12,525 |
| Morgan County | 15,612 | 15,625 | 15,602 | 15,570 | 15,369 | 15,339 | 15,304 | 15,292 | 15,291 |
| Moultrie County | 6,020 | 5,942 | 5,909 | 5,867 | 5,834 | 5,791 | 5,753 | 5,743 | 5,743 |
| Ogle County | 21,797 | 21,560 | 21,318 | 21,038 | 20,822 | 20,630 | 20,462 | 20,420 | 20,420 |
| Peoria County | 81,775 | 81,030 | 80,444 | 79,905 | 79,484 | 79,172 | 78,402 | 78,208 | 78,204 |
| Perry County | 9,771 | 9,786 | 9,732 | 9,693 | 9,614 | 9,546 | 9,480 | 9,457 | 9,457 |
| Piatt County | 7,201 | 7,118 | 7,047 | 6,983 | 6,930 | 6,869 | 6,813 | 6,799 | 6,798 |
| Pike County | 8,240 | 8,181 | 8,154 | 8,111 | 8,067 | 8,054 | 8,019 | 8,010 | 8,011 |
| Pope County | 2,430 | 2,434 | 2,421 | 2,405 | 2,388 | 2,374 | 2,357 | 2,351 | 2,351 |
| Pulaski County | 3,421 | 3,423 | 3,410 | 3,411 | 3,396 | 3,379 | 3,360 | 3,353 | 3,353 |
| Putnam County | 3,099 | 3,063 | 3,035 | 3,004 | 2,968 | 2,932 | 2,897 | 2,888 | 2,888 |
| Randolph County | 13,651 | 13,586 | 13,541 | 13,483 | 13,430 | 13,395 | 13,342 | 13,328 | 13,328 |
| Richland County | 7,728 | 7,732 | 7,696 | 7,667 | 7,621 | 7,546 | 7,485 | 7,468 | 7,468 |
| Rock Island County | 65,302 | 65,040 | 64,889 | 64,773 | 64,681 | 64,599 | 64,515 | 64,493 | 64,489 |
| Saline County | 12,823 | 12,843 | 12,772 | 12,667 | 12,564 | 12,476 | 12,390 | 12,360 | 12,360 |
| Sangamon County | 90,063 | 89,332 | 88,570 | 87,757 | 87,066 | 86,382 | 85,648 | 85,461 | 85,459 |
| Schuyler County | 3,426 | 3,432 | 3,413 | 3,386 | 3,359 | 3,335 | 3,312 | 3,304 | 3,304 |
| Scott County | 2,552 | 2,557 | 2,543 | 2,523 | 2,502 | 2,485 | 2,469 | 2,463 | 2,464 |
| Shelby County | 10,280 | 10,292 | 10,231 | 10,199 | 10,164 | 10,129 | 10,075 | 10,061 | 10,060 |
| St. Clair County | 113,164 | 111,497 | 109,669 | 108,162 | 106,664 | 105,661 | 104,685 | 104,438 | 104,446 |
| Stark County | 2,814 | 2,816 | 2,803 | 2,790 | 2,774 | 2,756 | 2,732 | 2,725 | 2,725 |
| Stephenson County | 22,149 | 22,098 | 22,045 | 21,986 | 21,924 | 21,839 | 21,739 | 21,713 | 21,713 |
| Tazewell County | 55,992 | 55,346 | 54,755 | 54,106 | 53,724 | 53,404 | 53,061 | 52,974 | 52,973 |
| Union County | 8,097 | 8,079 | 8,062 | 8,031 | 7,994 | 7,955 | 7,907 | 7,894 | 7,894 |
| Vermilion County | 36,793 | 36,833 | 36,714 | 36,623 | 36,541 | 36,469 | 36,380 | 36,350 | 36,349 |
| Wabash County | 5,866 | 5,864 | 5,839 | 5,825 | 5,805 | 5,787 | 5,765 | 5,758 | 5,758 |
| Warren County | 7,871 | 7,870 | 7,862 | 7,813 | 7,818 | 7,814 | 7,793 | 7,787 | 7,787 |
| Washington County | 6,707 | 6,670 | 6,616 | 6,558 | 6,512 | 6,465 | 6,401 | 6,385 | 6,385 |
| Wayne County | 8,199 | 8,213 | 8,191 | 8,149 | 8,110 | 8,071 | 7,977 | 7,950 | 7,950 |
| White County | 7,630 | 7,642 | 7,608 | 7,555 | 7,502 | 7,456 | 7,409 | 7,393 | 7,393 |
| Whiteside County | 25,565 | 25,464 | 25,345 | 25,296 | 25,219 | 25,134 | 25,046 | 25,023 | 25,025 |
| Will County | 224,068 | 216,295 | 208,583 | 199,754 | 191,588 | 184,326 | 177,351 | 175,527 | 175,524 |
| Williamson County | 29,392 | 29,124 | 28,773 | 28,429 | 28,158 | 27,961 | 27,765 | 27,709 | 27,703 |
| Winnebago County | 123,457 | 121,711 | 120,006 | 118,249 | 116,899 | 115,710 | 114,667 | 114,405 | 114,404 |
| Woodford County | 14,677 | 14,519 | 14,255 | 14,049 | 13,853 | 13,682 | 13,526 | 13,486 | 13,487 |
Source: Population Division, U.S. Census Bureau