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Source: U.S. Census Bureau
Contact: Statistical Information Branch at 301-457-3242 or
hhes-info@census.gov
Data revised: 04/01/2011
Download: Excel Spreadsheet   (and Excel Viewer)
Total Population for Iowa and Its Counties
  Actual Forecast
County 1960 1970 1980 1990 2000 2010 2020 2030 2040
State of Iowa 2,757,537 2,825,368 2,913,808 2,776,831 2,926,324 3,028,666 3,172,237 3,328,308 3,487,942
Adair 10,893 9,487 9,509 8,409 8,243 7,538 7,732 7,957 8,191
Adams 7,468 6,322 5,731 4,866 4,482 4,019 3,934 3,865 3,799
Allamakee 15,982 14,968 15,108 13,855 14,675 14,593 14,927 15,319 15,723
Appanoose 16,015 15,007 15,511 13,743 13,721 12,793 12,567 12,393 12,231
Audubon 10,919 9,595 8,559 7,334 6,830 6,013 5,940 5,891 5,849
Benton 23,422 22,885 23,649 22,429 25,308 26,715 27,744 28,881 30,048
Black Hawk 122,482 132,916 137,961 123,798 128,012 128,968 132,638 136,837 141,175
Boone 28,037 26,470 26,184 25,186 26,224 26,364 26,557 26,859 27,188
Bremer 21,108 22,737 24,820 22,813 23,325 23,830 24,633 25,534 26,462
Buchanan 22,293 21,762 22,900 20,844 21,093 21,091 21,481 21,957 22,454
Buena Vista 21,189 20,693 20,774 19,965 20,411 19,664 19,565 19,546 19,546
Butler 17,467 16,953 17,668 15,731 15,305 14,631 14,630 14,687 14,758
Calhoun 15,923 14,292 13,542 11,508 11,115 9,820 9,532 9,283 9,043
Carroll 23,431 22,912 22,951 21,423 21,421 20,982 21,357 21,819 22,302
Cass 17,919 17,007 16,932 15,128 14,684 13,741 13,311 12,938 12,577
Cedar 17,791 17,655 18,635 17,444 18,187 18,070 18,106 18,213 18,337
Cerro Gordo 49,894 49,223 48,458 46,733 46,447 44,045 45,532 47,200 48,917
Cherokee 18,598 17,269 16,238 14,098 13,035 11,495 11,263 11,077 10,902
Chickasaw 15,034 14,969 15,437 13,295 13,095 12,096 12,024 12,000 11,988
Clarke 8,222 7,581 8,612 8,287 9,133 9,136 9,694 10,290 10,897
Clay 18,504 18,464 19,576 17,585 17,372 16,705 16,852 17,067 17,300
Clayton 21,962 20,606 21,098 19,054 18,678 17,530 17,428 17,391 17,366
Clinton 55,060 56,749 57,122 51,040 50,149 48,829 48,486 48,340 48,240
Crawford 18,569 19,116 18,935 16,775 16,942 16,371 16,224 16,144 16,080
Dallas 24,123 26,085 29,513 29,755 40,750 62,179 73,650 85,386 97,231
Davis 9,199 8,207 9,104 8,312 8,541 8,575 8,647 8,753 8,868
Decatur 10,539 9,737 9,794 8,338 8,689 8,370 8,212 8,088 7,972
Delaware 18,483 18,770 18,933 18,035 18,404 17,257 17,110 17,028 16,956
Des Moines 44,605 46,982 46,203 42,614 42,351 40,356 39,184 38,176 37,206
Dickinson 12,574 12,565 15,629 14,909 16,424 16,978 18,066 19,225 20,405
Dubuque 80,048 90,609 93,745 86,403 89,143 93,303 96,593 100,248 103,994
Emmet 14,871 14,009 13,336 11,569 11,027 10,373 10,004 9,677 9,358
Fayette 28,581 26,898 25,488 21,843 22,008 20,169 19,744 19,397 19,066
Floyd 21,102 19,860 19,597 17,058 16,900 16,132 15,948 15,829 15,724
Franklin 15,472 13,255 13,036 11,364 10,704 10,412 10,134 9,899 9,674
Fremont 10,282 9,282 9,401 8,226 8,010 7,444 7,468 7,522 7,584
Greene 14,379 12,716 12,119 10,045 10,366 9,219 8,894 8,606 8,325
Grundy 14,132 14,119 14,366 12,029 12,369 12,279 12,812 13,395 13,993
Guthrie 13,607 12,243 11,983 10,935 11,353 10,922 10,804 10,730 10,666
Hamilton 20,032 18,383 17,862 16,071 16,438 15,277 14,946 14,678 14,423
Hancock 14,604 13,506 13,833 12,638 12,100 11,379 11,557 11,781 12,016
Hardin 22,533 22,248 21,776 19,094 18,812 17,259 16,778 16,367 15,972
Harrison 17,600 16,240 16,348 14,730 15,666 15,343 16,016 16,753 17,508
Henry 18,187 18,114 18,890 19,226 20,336 20,195 20,197 20,282 20,387
Howard 12,734 11,442 11,114 9,809 9,932 9,559 9,973 10,427 10,893
Humboldt 13,156 12,519 12,246 10,756 10,381 9,491 9,420 9,387 9,364
Ida 10,269 9,283 8,908 8,365 7,837 6,877 6,980 7,113 7,252
Iowa 16,396 15,419 15,429 14,630 15,671 15,898 16,073 16,312 16,565
Jackson 20,754 20,839 22,503 19,950 20,296 19,936 19,877 19,893 19,923
Jasper 35,282 35,425 36,425 34,795 37,213 36,636 37,067 37,648 38,267
Jefferson 15,818 15,774 16,316 16,310 16,181 15,504 15,779 16,117 16,471
Johnson 53,663 72,127 81,717 96,119 111,006 133,071 158,456 184,445 210,695
Jones 20,693 19,868 20,401 19,444 20,221 20,360 20,520 20,761 21,021
Keokuk 15,492 13,943 12,921 11,624 11,400 10,608 10,215 9,861 9,515
Kossuth 25,314 22,937 21,891 18,591 17,163 15,417 15,258 15,160 15,076
Lee 44,207 42,996 43,106 38,687 38,052 35,132 33,921 32,853 31,816
Linn 136,899 163,213 169,775 168,767 191,701 212,543 233,256 254872 276,793
Louisa 10,290 10,682 12,055 11,592 12,183 11,757 11,968 12,225 12,495
Lucas 10,923 10,163 10,313 9,070 9,422 9,263 9,172 9,118 9,073
Lyon 14,468 13,340 12,896 11,952 11,763 11,198 11,072 10,994 10,928
Madison 12,295 11,558 12,597 12,483 14,019 15,739 16,964 18,255 19,567
Mahaska 23,602 22,177 22,867 21,532 22,335 22,326 22,451 22,667 22,907
Marion 25,886 26,352 29,669 30,001 32,052 32,909 34,737 36,703 38,708
Marshall 37,984 41,076 41,652 38,276 39,311 39,582 40,053 40,687 41,362
Mills 13,050 11,832 13,406 13,202 14,547 15,341 16,545 17,813 19,102
Mitchell 14,043 13,108 12,329 10,928 10,874 10,740 10,939 11,182 11,436
Monona 13,916 12,069 11,692 10,034 10,020 8,913 8,691 8,504 8,323
Monroe 10,463 9,357 9,209 8,114 8,016 7,532 7,342 7,183 7,031
Montgomery 14,467 12,781 13,413 12,076 11,771 10,810 10,559 10,353 10,156
Muscatine 33,840 37,181 40,436 39,907 41,722 42,760 44,225 45,863 47,547
O'Brien 18,840 17,522 16,972 15,444 15,102 13,887 13,625 13,418 13,222
Osceola 10,064 8,555 8,371 7,267 7,003 6,413 6,286 6,185 6,089
Page 21,023 18,537 19,063 16,870 16,976 15,577 15,215 14,916 14,632
Palo Alto 14,736 13,289 12,721 10,669 10,147 9,258 8,868 8,515 8,170
Plymouth 23,906 24,322 24,743 23,388 24,849 24,416 24,988 25,660 26,358
Pocahontas 14,234 12,793 11,369 9,525 8,662 7,463 7,012 6,592 6,178
Polk 266,315 286,130 303,170 327,140 374,601 434,416 484,323 536,062 588,435
Pottawattamie 83,102 86,991 86,561 82,628 87,704 89,645 90,046 90,817 91,681
Poweshiek 19,300 18,803 19,306 19,033 18,815 18,658 19,083 19,585 20,108
Ringgold 7,910 6,373 6,112 5,420 5,469 5,123 4,981 4,861 4,745
Sac 17,007 15,573 14,118 12,324 11,529 10,200 9,696 9,233 8,778
Scott 119,067 142,687 160,022 150,973 158,668 166,229 174,631 183,715 192,990
Shelby 15,825 15,528 15,043 13,230 13,173 12,043 11,662 11,329 11,008
Sioux 26,375 27,996 30,813 29,903 31,589 32,461 33,907 35,487 37,105
Story 49,327 62,783 72,326 74,252 79,981 88,310 96,451 104,962 113,593
Tama 21,413 20,147 19,533 17,419 18,103 17,643 17,489 17,408 17,344
Taylor 10,288 8,790 8,353 7,114 6,958 6,235 5,952 5,694 5,441
Union 13,712 13,557 13,858 12,750 12,309 12,219 12,063 11,958 11,864
Van Buren 9,778 8,643 8,626 7,676 7,809 7,655 7,585 7,545 7,514
Wapello 46,126 42,149 40,241 35,696 36,051 35,328 34,566 33,948 33,362
Warren 20,829 27,432 34,878 36,033 40,671 46,143 51,742 57,536 63,399
Washington 19,406 18,967 20,141 19,612 20,670 21,459 22,130 22,889 23,670
Wayne 9,800 8,405 8,199 7,067 6,730 6,202 5,978 5,780 5,586
Webster 47,810 48,391 45,953 40,342 40,235 38,274 37,238 36,358 35,513
Winnebago 13,099 12,990 13,010 12,122 11,723 10,878 10,810 10,786 10,771
Winneshiek 21,651 21,758 21,876 20,847 21,310 20,992 21,477 22,047 22,640
Woodbury 107,849 103,052 100,884 98,276 103,877 102,736 104,078 105,835 107,695
Worth 10,259 8,984 9,075 7,991 7,909 7,641 7,575 7,540 7,512
Wright 19,447 17,294 16,319 14,269 14,334 12,800 12,346 11,943 11,552
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