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Iowa Census Data

  1. Iowa Cities & Towns: Absolute & Relative Change (%) from 2000 to 2009
  2. Iowa Cities & Towns: Population Estimates From 2000 to 2009
  3. Iowa Quick Facts: People, Business & Geography (U.S. Census Bureau)
  4. 2010 Census: Iowa Profile (PDF)

Census Data for Iowa Counties

(Links below lead to Quick Facts for Iowa Counties: People, Business & Geography at U.S. Census Bureau.)

Area 7/1/2009 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
Iowa 3,007,856 2,993,987 2,978,719 2,964,391 2,949,450 2,941,358 2,932,799 2,929,264 2,929,424 2,928,184 2,926,324
Adair County 7,350 7,445 7,584 7,677 7,721 7,847 7,916 7,964 8,077 8,208 8,243
Adams County 3,930 4,032 4,099 4,141 4,159 4,256 4,321 4,350 4,396 4,475 4,482
Allamakee County 14,407 14,416 14,421 14,442 14,419 14,371 14,371 14,309 14,343 14,671 14,675
Appanoose County 12,698 12,780 12,926 13,158 13,315 13,355 13,452 13,377 13,558 13,701 13,721
Audubon County 6,032 6,105 6,132 6,179 6,251 6,378 6,438 6,549 6,657 6,807 6,830
Benton County 26,734 26,642 26,551 26,571 26,643 26,493 26,176 25,991 25,619 25,338 25,308
Black Hawk County 129,276 128,040 126,737 126,556 126,235 126,077 126,026 126,628 127,656 128,024 128,012
Boone County 26,072 26,186 26,297 26,246 26,311 26,224 26,123 26,032 26,210 26,247 26,224
Bremer County 23,460 23,509 23,633 23,531 23,394 23,369 23,273 23,202 23,401 23,282 23,325
Buchanan County 20,910 21,033 20,975 20,875 20,760 20,852 20,778 20,761 20,945 21,079 21,093
Buena Vista County 19,601 19,491 19,455 19,604 19,713 19,800 19,990 20,142 20,194 20,352 20,411
Butler County 14,341 14,595 14,626 14,632 14,712 14,782 14,782 14,826 15,005 15,290 15,305
Calhoun County 9,671 9,851 9,951 10,101 10,247 10,388 10,522 10,719 10,946 11,089 11,115
Carroll County 20,674 20,679 20,788 20,766 20,911 20,888 20,984 21,138 21,214 21,377 21,421
Cass County 13,758 13,812 13,870 13,912 13,918 14,078 14,228 14,214 14,476 14,672 14,684
Cedar County 18,006 18,047 17,950 18,000 17,933 18,030 18,058 18,049 18,074 18,200 18,187
Cerro Gordo County 43,609 43,740 43,915 44,048 44,321 44,654 45,142 45,263 45,744 46,349 46,447
Cherokee County 11,409 11,501 11,684 11,791 12,021 12,210 12,347 12,530 12,835 13,003 13,035
Chickasaw County 12,017 12,071 12,174 12,268 12,268 12,436 12,550 12,763 13,047 13,063 13,095
Clarke County 9,086 9,085 9,017 9,074 9,076 9,221 9,211 9,168 9,180 9,187 9,133
Clay County 16,617 16,617 16,629 16,732 16,784 16,916 16,957 17,071 17,255 17,372 17,372
Clayton County 17,463 17,555 17,686 17,779 17,853 18,026 18,107 18,211 18,451 18,607 18,678
Clinton County 48,934 49,062 49,084 49,264 49,299 49,380 49,487 49,614 49,845 50,045 50,149
Crawford County 16,416 16,399 16,503 16,486 16,591 16,675 16,752 16,847 16,890 16,927 16,942
Dallas County 61,950 59,977 57,278 54,592 51,779 49,388 46,308 44,324 42,720 41,070 40,750
Davis County 8,562 8,573 8,575 8,530 8,507 8,555 8,494 8,565 8,571 8,542 8,541
Decatur County 8,231 8,201 8,342 8,372 8,460 8,454 8,469 8,543 8,652 8,659 8,689
Delaware County 17,205 17,335 17,506 17,560 17,619 17,797 17,977 18,123 18,212 18,388 18,404
Des Moines County 41,058 40,803 40,634 40,453 40,553 40,742 41,152 41,307 41,917 42,284 42,351
Dickinson County 16,623 16,644 16,586 16,621 16,608 16,478 16,318 16,343 16,473 16,461 16,424
Dubuque County 93,072 92,589 92,254 91,390 90,926 90,618 90,116 89,218 88,998 89,232 89,143
Emmet County 10,241 10,364 10,341 10,371 10,468 10,508 10,684 10,795 10,873 10,992 11,027
Fayette County 20,164 20,238 20,379 20,701 20,939 21,024 21,299 21,424 21,674 21,992 22,008
Floyd County 15,910 16,031 16,224 16,335 16,309 16,417 16,511 16,589 16,618 16,854 16,900
Franklin County 10,540 10,567 10,623 10,574 10,664 10,641 10,588 10,636 10,599 10,682 10,704
Fremont County 7,345 7,422 7,569 7,549 7,553 7,604 7,704 7,766 7,866 7,996 8,010
Greene County 9,251 9,349 9,497 9,568 9,778 9,928 10,000 10,092 10,142 10,338 10,366
Grundy County 12,177 12,110 12,085 12,227 12,232 12,245 12,241 12,303 12,285 12,362 12,369
Guthrie County 10,833 10,984 11,051 11,093 11,201 11,350 11,310 11,214 11,220 11,341 11,353
Hamilton County 15,238 15,352 15,538 15,734 15,914 16,007 16,151 16,204 16,163 16,413 16,438
Hancock County 11,046 11,229 11,310 11,482 11,626 11,670 11,771 11,760 11,903 12,096 12,100
Hardin County 17,144 17,377 17,505 17,637 17,768 18,002 18,213 18,419 18,648 18,816 18,812
Harrison County 15,328 15,245 15,416 15,542 15,520 15,542 15,544 15,497 15,638 15,691 15,666
Henry County 19,929 20,067 20,134 20,095 20,166 20,073 20,105 19,967 20,336 20,292 20,336
Howard County 9,410 9,436 9,465 9,510 9,620 9,679 9,713 9,794 9,869 9,916 9,932
Humboldt County 9,473 9,565 9,626 9,762 9,801 9,935 10,014 10,073 10,280 10,367 10,381
Ida County 6,762 6,922 6,980 7,021 7,169 7,295 7,445 7,550 7,662 7,799 7,837
Iowa County 15,811 15,750 15,794 15,932 15,911 15,801 15,827 15,756 15,780 15,708 15,671
Jackson County 19,728 19,804 19,906 19,988 20,035 20,078 20,098 20,116 20,252 20,302 20,296
Jasper County 36,257 36,460 36,567 36,735 37,011 37,256 37,400 37,366 37,266 37,215 37,213
Jefferson County 15,472 15,431 15,532 15,491 15,553 15,684 15,721 15,806 16,035 16,154 16,181
Johnson County 131,005 128,145 125,536 123,171 121,191 119,747 117,459 115,560 113,878 111,481 111,006
Jones County 20,364 20,430 20,403 20,324 20,303 20,365 20,212 20,150 20,158 20,208 20,221
Keokuk County 10,562 10,655 10,724 10,727 10,893 11,073 11,194 11,341 11,372 11,417 11,400
Kossuth County 15,154 15,245 15,456 15,664 15,956 16,156 16,294 16,499 16,780 17,125 17,163
Lee County 35,447 35,484 35,823 35,997 36,109 36,385 36,472 36,858 37,386 37,920 38,052
Linn County 209,226 207,839 205,283 202,314 200,114 198,108 196,706 195,918 194,323 192,307 191,701
Louisa County 11,245 11,694 11,768 11,802 11,775 12,048 12,175 12,195 12,172 12,170 12,183
Lucas County 9,179 9,337 9,457 9,489 9,588 9,619 9,473 9,438 9,443 9,405 9,422
Lyon County 11,172 11,189 11,228 11,332 11,449 11,512 11,559 11,581 11,634 11,741 11,763
Madison County 15,409 15,454 15,343 15,196 14,864 14,689 14,454 14,315 14,148 14,058 14,019
Mahaska County 22,000 22,120 22,092 22,039 22,220 22,060 22,021 22,309 22,378 22,304 22,335
Marion County 32,682 32,774 32,654 32,830 32,310 32,256 32,277 32,412 32,505 32,101 32,052
Marshall County 39,259 39,236 39,075 38,877 39,020 39,227 39,033 39,033 39,274 39,317 39,311
Mills County 15,002 15,127 15,147 15,139 14,846 14,695 14,596 14,533 14,482 14,555 14,547
Mitchell County 10,781 10,794 10,786 10,807 10,784 10,891 10,826 10,826 10,735 10,865 10,874
Monona County 8,882 9,019 9,123 9,223 9,344 9,511 9,682 9,705 9,818 10,003 10,020
Monroe County 7,549 7,573 7,569 7,643 7,728 7,784 7,812 7,793 7,937 8,001 8,016
Montgomery County 10,796 10,792 10,939 11,135 11,177 11,162 11,188 11,300 11,506 11,791 11,771
Muscatine County 42,934 42,670 42,456 42,226 41,952 41,806 41,680 41,803 41,792 41,799 41,722
O'Brien County 13,928 13,898 14,036 14,191 14,257 14,345 14,589 14,681 14,881 15,066 15,102
Osceola County 6,344 6,448 6,444 6,571 6,621 6,763 6,811 6,849 6,937 6,982 7,003
Page County 15,260 15,527 15,913 16,043 16,002 16,001 16,166 16,425 16,869 16,917 16,976
Palo Alto County 9,279 9,318 9,420 9,438 9,569 9,648 9,664 9,843 10,029 10,136 10,147
Plymouth County 24,210 24,262 24,303 24,460 24,545 24,687 24,584 24,552 24,745 24,849 24,849
Pocahontas County 7,346 7,479 7,614 7,638 7,793 7,970 8,143 8,336 8,459 8,600 8,662
Polk County 429,439 422,893 416,276 409,146 401,993 393,899 390,092 385,838 381,093 375,963 374,601
Pottawattamie County 90,224 89,986 89,572 89,393 88,960 88,781 88,055 87,944 87,671 87,966 87,704
Poweshiek County 18,423 18,493 18,662 18,615 18,625 18,794 18,806 18,755 18,850 18,834 18,815
Ringgold County 4,944 5,013 5,061 5,101 5,191 5,246 5,263 5,294 5,389 5,461 5,469
Sac County 10,059 10,199 10,294 10,473 10,528 10,717 10,848 11,040 11,358 11,474 11,529
Scott County 166,650 164,437 162,339 161,473 160,073 159,323 158,808 158,677 158,542 158,678 158,668
Shelby County 11,957 12,129 12,289 12,305 12,408 12,647 12,747 12,836 12,992 13,070 13,173
Sioux County 32,244 32,064 32,017 32,114 31,905 31,866 31,782 31,795 31,742 31,561 31,589
Story County 87,214 86,219 85,232 83,476 81,757 81,897 81,453 81,612 80,057 80,127 79,981
Tama County 17,377 17,549 17,670 17,800 17,897 17,929 17,846 17,901 18,014 18,072 18,103
Taylor County 6,344 6,337 6,425 6,541 6,522 6,677 6,737 6,810 6,892 6,978 6,958
Union County 12,241 12,154 12,051 11,990 11,943 11,919 11,881 12,083 12,201 12,272 12,309
Van Buren County 7,679 7,690 7,676 7,640 7,625 7,664 7,671 7,736 7,735 7,817 7,809
Wapello County 35,334 35,297 35,344 35,673 35,771 35,651 35,716 35,803 35,954 36,005 36,051
Warren County 45,275 44,793 44,292 43,677 42,923 42,263 41,943 41,282 41,010 40,778 40,671
Washington County 21,258 21,214 21,152 21,100 21,037 21,011 20,994 20,982 21,000 20,701 20,670
Wayne County 6,283 6,267 6,283 6,391 6,422 6,501 6,568 6,635 6,640 6,725 6,730
Webster County 38,346 38,372 38,448 38,550 38,574 38,930 39,372 39,672 40,037 40,195 40,235
Winnebago County 10,602 10,689 10,772 10,943 11,167 11,189 11,303 11,329 11,533 11,743 11,723
Winneshiek County 20,629 20,711 20,824 20,784 20,871 20,894 20,896 21,123 21,236 21,284 21,310
Woodbury County 102,831 101,971 101,382 101,427 101,211 102,330 102,441 102,981 103,311 103,822 103,877
Worth County 7,541 7,605 7,623 7,618 7,715 7,708 7,719 7,794 7,801 7,900 7,909
Wright County 12,716 12,878 13,039 13,187 13,377 13,537 13,624 13,819 14,055 14,313 14,334

Source: Population Division, U.S. Census Bureau