(Links below lead to Quick Facts for Kansas Counties: People, Business & Geography at U.S. Census Bureau.)
| Area | 7/1/2008 | 7/1/2007 | 7/1/2006 | 7/1/2005 | 7/1/2004 | 7/1/2003 | 7/1/2002 | 7/1/2001 | 7/1/2000 | Census 2000 |
| Kansas | 2,802,134 | 2,777,382 | 2,756,267 | 2,742,204 | 2,731,069 | 2,722,070 | 2,712,561 | 2,701,346 | 2,692,681 | 2,688,418 |
|---|---|---|---|---|---|---|---|---|---|---|
| Allen County | 13,319 | 13,432 | 13,531 | 13,638 | 13,844 | 13,876 | 14,069 | 14,149 | 14,386 | 14,385 |
| Anderson County | 7,984 | 7,898 | 7,889 | 7,953 | 7,995 | 8,109 | 8,092 | 8,168 | 8,090 | 8,110 |
| Atchison County | 16,481 | 16,529 | 16,614 | 16,588 | 16,715 | 16,697 | 16,703 | 16,794 | 16,765 | 16,774 |
| Barber County | 4,674 | 4,779 | 4,844 | 4,836 | 4,884 | 4,956 | 5,025 | 5,123 | 5,287 | 5,307 |
| Barton County | 27,703 | 27,765 | 27,769 | 27,865 | 27,725 | 27,827 | 27,894 | 27,923 | 28,126 | 28,205 |
| Bourbon County | 14,851 | 14,784 | 14,804 | 14,852 | 14,995 | 15,102 | 15,154 | 15,356 | 15,382 | 15,379 |
| Brown County | 10,009 | 10,044 | 10,102 | 10,095 | 10,266 | 10,283 | 10,391 | 10,569 | 10,711 | 10,724 |
| Butler County | 63,562 | 62,879 | 62,376 | 61,606 | 61,112 | 60,510 | 60,132 | 59,731 | 59,678 | 59,482 |
| Chase County | 2,804 | 2,850 | 2,965 | 2,985 | 3,017 | 2,961 | 3,027 | 2,980 | 3,029 | 3,030 |
| Chautauqua County | 3,768 | 3,797 | 3,862 | 4,003 | 4,154 | 4,154 | 4,195 | 4,248 | 4,347 | 4,359 |
| Cherokee County | 21,082 | 21,312 | 21,371 | 21,397 | 21,835 | 21,914 | 22,042 | 22,265 | 22,549 | 22,605 |
| Cheyenne County | 2,742 | 2,773 | 2,827 | 2,855 | 2,904 | 2,942 | 3,027 | 3,080 | 3,156 | 3,165 |
| Clark County | 2,108 | 2,087 | 2,142 | 2,198 | 2,277 | 2,300 | 2,331 | 2,365 | 2,387 | 2,390 |
| Clay County | 8,859 | 8,691 | 8,586 | 8,550 | 8,531 | 8,559 | 8,645 | 8,741 | 8,812 | 8,822 |
| Cloud County | 9,453 | 9,388 | 9,431 | 9,589 | 9,619 | 9,790 | 9,884 | 10,054 | 10,226 | 10,268 |
| Coffey County | 8,409 | 8,414 | 8,538 | 8,511 | 8,601 | 8,714 | 8,722 | 8,776 | 8,890 | 8,865 |
| Comanche County | 1,950 | 1,877 | 1,855 | 1,924 | 1,900 | 1,905 | 1,955 | 1,983 | 1,956 | 1,967 |
| Cowley County | 34,065 | 34,208 | 34,160 | 34,484 | 35,140 | 35,396 | 36,061 | 35,757 | 36,254 | 36,291 |
| Crawford County | 38,868 | 38,732 | 38,627 | 38,506 | 38,543 | 38,538 | 38,274 | 38,393 | 38,235 | 38,242 |
| Decatur County | 2,912 | 2,945 | 3,022 | 3,066 | 3,187 | 3,261 | 3,351 | 3,434 | 3,458 | 3,472 |
| Dickinson County | 19,328 | 18,968 | 18,965 | 18,878 | 18,869 | 19,010 | 18,968 | 19,058 | 19,347 | 19,344 |
| Doniphan County | 7,753 | 7,767 | 7,733 | 7,717 | 7,891 | 8,050 | 8,122 | 8,186 | 8,235 | 8,249 |
| Douglas County | 114,748 | 113,400 | 112,559 | 111,519 | 108,509 | 106,327 | 104,472 | 102,325 | 100,281 | 99,962 |
| Edwards County | 3,082 | 3,098 | 3,132 | 3,235 | 3,265 | 3,247 | 3,328 | 3,379 | 3,425 | 3,449 |
| Elk County | 3,047 | 3,022 | 3,032 | 3,077 | 3,104 | 3,112 | 3,166 | 3,158 | 3,219 | 3,261 |
| Ellis County | 27,801 | 27,421 | 27,314 | 27,105 | 27,199 | 27,310 | 27,406 | 27,532 | 27,458 | 27,507 |
| Ellsworth County | 6,250 | 6,298 | 6,281 | 6,256 | 6,317 | 6,351 | 6,357 | 6,443 | 6,525 | 6,525 |
| Finney County | 40,998 | 40,782 | 40,676 | 40,502 | 40,516 | 40,017 | 40,122 | 40,638 | 40,584 | 40,523 |
| Ford County | 33,293 | 33,077 | 32,751 | 32,876 | 32,654 | 32,558 | 32,164 | 32,281 | 32,565 | 32,458 |
| Franklin County | 26,562 | 26,411 | 26,294 | 25,998 | 25,962 | 25,704 | 25,493 | 25,145 | 24,851 | 24,784 |
| Geary County | 31,171 | 29,539 | 29,011 | 28,267 | 28,130 | 28,606 | 28,146 | 27,986 | 27,683 | 27,947 |
| Gove County | 2,548 | 2,629 | 2,706 | 2,725 | 2,800 | 2,868 | 2,958 | 3,005 | 3,067 | 3,068 |
| Graham County | 2,592 | 2,605 | 2,641 | 2,662 | 2,706 | 2,777 | 2,842 | 2,871 | 2,921 | 2,946 |
| Grant County | 7,395 | 7,481 | 7,464 | 7,457 | 7,535 | 7,625 | 7,803 | 7,741 | 7,877 | 7,909 |
| Gray County | 5,688 | 5,633 | 5,735 | 5,833 | 5,915 | 5,950 | 5,955 | 5,906 | 5,903 | 5,904 |
| Greeley County | 1,266 | 1,289 | 1,279 | 1,322 | 1,389 | 1,396 | 1,439 | 1,538 | 1,540 | 1,534 |
| Greenwood County | 6,861 | 7,007 | 6,981 | 7,230 | 7,426 | 7,502 | 7,580 | 7,667 | 7,660 | 7,673 |
| Hamilton County | 2,631 | 2,613 | 2,573 | 2,566 | 2,625 | 2,685 | 2,680 | 2,679 | 2,660 | 2,670 |
| Harper County | 5,857 | 5,827 | 5,862 | 5,975 | 6,104 | 6,186 | 6,224 | 6,390 | 6,502 | 6,536 |
| Harvey County | 33,675 | 33,471 | 33,307 | 33,339 | 33,367 | 33,273 | 33,165 | 32,909 | 32,873 | 32,869 |
| Haskell County | 3,919 | 3,981 | 4,011 | 4,123 | 4,146 | 4,155 | 4,167 | 4,233 | 4,305 | 4,307 |
| Hodgeman County | 1,948 | 1,946 | 2,014 | 2,026 | 2,081 | 2,119 | 2,143 | 2,126 | 2,084 | 2,085 |
| Jackson County | 13,240 | 13,348 | 13,347 | 13,361 | 13,076 | 12,991 | 12,840 | 12,687 | 12,664 | 12,657 |
| Jefferson County | 18,421 | 18,436 | 18,429 | 18,647 | 18,619 | 18,500 | 18,490 | 18,463 | 18,443 | 18,426 |
| Jewell County | 3,142 | 3,196 | 3,247 | 3,262 | 3,345 | 3,422 | 3,496 | 3,612 | 3,759 | 3,791 |
| Johnson County | 534,093 | 524,801 | 515,275 | 505,329 | 496,152 | 486,160 | 475,755 | 463,878 | 454,605 | 451,086 |
| Kearny County | 4,159 | 4,121 | 4,214 | 4,271 | 4,336 | 4,334 | 4,440 | 4,530 | 4,513 | 4,531 |
| Kingman County | 7,719 | 7,831 | 7,923 | 8,068 | 8,289 | 8,428 | 8,394 | 8,555 | 8,677 | 8,673 |
| Kiowa County | 2,541 | 2,933 | 2,945 | 2,981 | 3,045 | 3,107 | 3,101 | 3,133 | 3,254 | 3,278 |
| Labette County | 21,871 | 21,984 | 21,957 | 21,939 | 21,944 | 22,129 | 22,248 | 22,458 | 22,737 | 22,835 |
| Lane County | 1,743 | 1,746 | 1,758 | 1,827 | 1,900 | 1,944 | 1,972 | 2,099 | 2,145 | 2,155 |
| Leavenworth County | 74,276 | 73,507 | 72,530 | 71,756 | 71,401 | 71,195 | 70,749 | 69,798 | 68,922 | 68,691 |
| Lincoln County | 3,261 | 3,291 | 3,276 | 3,366 | 3,357 | 3,490 | 3,482 | 3,543 | 3,574 | 3,578 |
| Linn County | 9,616 | 9,726 | 9,860 | 9,844 | 9,689 | 9,677 | 9,672 | 9,718 | 9,605 | 9,570 |
| Logan County | 2,593 | 2,629 | 2,663 | 2,752 | 2,801 | 2,842 | 2,926 | 2,958 | 3,048 | 3,046 |
| Lyon County | 35,562 | 35,846 | 35,615 | 35,773 | 35,901 | 35,756 | 35,750 | 36,001 | 35,958 | 35,935 |
| Marion County | 12,100 | 12,220 | 12,378 | 12,628 | 12,759 | 13,002 | 13,130 | 13,293 | 13,377 | 13,361 |
| Marshall County | 10,178 | 10,169 | 10,172 | 10,267 | 10,310 | 10,448 | 10,589 | 10,794 | 10,934 | 10,965 |
| McPherson County | 29,044 | 29,150 | 29,032 | 29,248 | 29,188 | 29,180 | 29,215 | 29,483 | 29,571 | 29,554 |
| Meade County | 4,359 | 4,355 | 4,413 | 4,486 | 4,493 | 4,538 | 4,630 | 4,650 | 4,622 | 4,631 |
| Miami County | 30,989 | 30,897 | 30,244 | 29,912 | 29,489 | 28,934 | 28,742 | 28,592 | 28,510 | 28,351 |
| Mitchell County | 6,292 | 6,294 | 6,316 | 6,387 | 6,495 | 6,651 | 6,685 | 6,763 | 6,911 | 6,932 |
| Montgomery County | 34,395 | 34,460 | 34,314 | 34,250 | 34,520 | 34,666 | 35,165 | 35,755 | 36,206 | 36,252 |
| Morris County | 6,037 | 5,949 | 5,907 | 5,949 | 5,907 | 5,921 | 5,980 | 6,058 | 6,113 | 6,104 |
| Morton County | 2,978 | 3,024 | 3,100 | 3,160 | 3,219 | 3,326 | 3,345 | 3,372 | 3,481 | 3,496 |
| Nemaha County | 10,112 | 10,177 | 10,186 | 10,241 | 10,297 | 10,411 | 10,450 | 10,465 | 10,684 | 10,717 |
| Neosho County | 16,223 | 16,220 | 16,141 | 16,295 | 16,429 | 16,440 | 16,613 | 16,838 | 16,944 | 16,997 |
| Ness County | 2,945 | 2,991 | 2,995 | 3,054 | 3,117 | 3,195 | 3,301 | 3,362 | 3,440 | 3,454 |
| Norton County | 5,370 | 5,409 | 5,510 | 5,574 | 5,632 | 5,729 | 5,761 | 5,814 | 5,948 | 5,953 |
| Osage County | 16,327 | 16,419 | 16,605 | 16,765 | 16,763 | 16,664 | 16,655 | 16,641 | 16,758 | 16,712 |
| Osborne County | 3,804 | 3,863 | 3,943 | 3,983 | 4,052 | 4,115 | 4,261 | 4,333 | 4,435 | 4,452 |
| Ottawa County | 6,026 | 6,003 | 5,978 | 6,004 | 6,039 | 6,097 | 6,152 | 6,122 | 6,190 | 6,163 |
| Pawnee County | 6,291 | 6,406 | 6,469 | 6,663 | 6,701 | 6,764 | 6,872 | 7,009 | 7,218 | 7,233 |
| Phillips County | 5,339 | 5,359 | 5,363 | 5,442 | 5,585 | 5,626 | 5,751 | 5,860 | 5,994 | 6,001 |
| Pottawatomie County | 19,695 | 19,416 | 18,887 | 18,795 | 18,682 | 18,543 | 18,325 | 18,273 | 18,277 | 18,209 |
| Pratt County | 9,411 | 9,404 | 9,426 | 9,407 | 9,323 | 9,443 | 9,580 | 9,524 | 9,630 | 9,647 |
| Rawlins County | 2,503 | 2,561 | 2,571 | 2,603 | 2,692 | 2,765 | 2,846 | 2,875 | 2,960 | 2,966 |
| Reno County | 63,427 | 63,090 | 63,284 | 63,261 | 63,366 | 63,665 | 63,965 | 64,469 | 64,688 | 64,790 |
| Republic County | 4,812 | 4,899 | 4,967 | 5,084 | 5,161 | 5,297 | 5,421 | 5,650 | 5,801 | 5,835 |
| Rice County | 10,060 | 10,043 | 10,189 | 10,368 | 10,478 | 10,453 | 10,526 | 10,611 | 10,731 | 10,761 |
| Riley County | 71,069 | 69,278 | 69,048 | 67,348 | 66,017 | 65,375 | 63,689 | 63,327 | 63,077 | 62,843 |
| Rooks County | 5,136 | 5,156 | 5,210 | 5,253 | 5,327 | 5,378 | 5,452 | 5,548 | 5,663 | 5,685 |
| Rush County | 3,232 | 3,203 | 3,226 | 3,306 | 3,379 | 3,390 | 3,423 | 3,495 | 3,534 | 3,551 |
| Russell County | 6,641 | 6,723 | 6,712 | 6,772 | 6,955 | 6,937 | 7,008 | 7,151 | 7,353 | 7,370 |
| Saline County | 54,657 | 54,462 | 54,113 | 53,932 | 53,835 | 53,750 | 53,989 | 53,868 | 53,645 | 53,597 |
| Scott County | 4,577 | 4,573 | 4,587 | 4,634 | 4,604 | 4,776 | 4,901 | 5,077 | 5,096 | 5,120 |
| Sedgwick County | 482,863 | 475,149 | 468,235 | 464,424 | 461,895 | 460,966 | 459,925 | 456,222 | 453,518 | 452,869 |
| Seward County | 23,016 | 22,889 | 22,612 | 22,561 | 22,696 | 22,736 | 22,730 | 22,519 | 22,533 | 22,510 |
| Shawnee County | 174,709 | 173,247 | 172,206 | 171,454 | 171,079 | 170,662 | 170,285 | 170,310 | 170,049 | 169,871 |
| Sheridan County | 2,510 | 2,485 | 2,500 | 2,526 | 2,523 | 2,604 | 2,636 | 2,708 | 2,794 | 2,813 |
| Sherman County | 6,013 | 5,973 | 5,908 | 6,070 | 6,118 | 6,239 | 6,360 | 6,589 | 6,746 | 6,760 |
| Smith County | 3,901 | 3,947 | 4,005 | 4,084 | 4,154 | 4,219 | 4,291 | 4,406 | 4,515 | 4,536 |
| Stafford County | 4,326 | 4,373 | 4,365 | 4,432 | 4,436 | 4,532 | 4,629 | 4,714 | 4,751 | 4,789 |
| Stanton County | 2,148 | 2,138 | 2,177 | 2,206 | 2,319 | 2,344 | 2,413 | 2,411 | 2,402 | 2,406 |
| Stevens County | 5,056 | 5,040 | 5,151 | 5,303 | 5,386 | 5,292 | 5,318 | 5,359 | 5,448 | 5,463 |
| Sumner County | 23,616 | 23,822 | 24,102 | 24,422 | 24,848 | 25,022 | 25,360 | 25,634 | 25,947 | 25,946 |
| Thomas County | 7,277 | 7,342 | 7,424 | 7,559 | 7,749 | 7,908 | 8,034 | 8,121 | 8,176 | 8,180 |
| Trego County | 2,882 | 2,906 | 2,946 | 3,004 | 3,105 | 3,090 | 3,138 | 3,231 | 3,292 | 3,319 |
| Wabaunsee County | 6,922 | 6,845 | 6,714 | 6,798 | 6,725 | 6,689 | 6,707 | 6,782 | 6,873 | 6,885 |
| Wallace County | 1,404 | 1,439 | 1,489 | 1,504 | 1,543 | 1,611 | 1,668 | 1,697 | 1,740 | 1,749 |
| Washington County | 5,791 | 5,824 | 5,910 | 5,984 | 6,057 | 6,161 | 6,232 | 6,325 | 6,472 | 6,483 |
| Wichita County | 2,148 | 2,204 | 2,235 | 2,303 | 2,305 | 2,398 | 2,432 | 2,501 | 2,518 | 2,531 |
| Wilson County | 9,698 | 9,825 | 9,736 | 9,761 | 9,779 | 10,055 | 10,104 | 10,217 | 10,304 | 10,332 |
| Woodson County | 3,285 | 3,316 | 3,385 | 3,476 | 3,455 | 3,553 | 3,595 | 3,745 | 3,763 | 3,788 |
| Wyandotte County | 154,287 | 153,601 | 153,206 | 153,897 | 154,474 | 155,913 | 157,293 | 158,265 | 157,856 | 157,882 |
Source: Population Division, U.S. Census Bureau