Source Data:  2005 Population Estimates, U.S. Census Bureau                                                                  
 
FIPS Geography Total Population by Age Group White Alone by Age Group Black Alone by Age Group Asian Alone by Age Group Native Hawaiian or Pacific Islander Alone by Age Group All Other Races by Age Group Hispanic by Age Group
Total <20 20-44 45-64 65+ Total <20 20-44 45-64 65+ Total <20 20-44 45-64 65+ Total <20 20-44 45-64 65+ Total <20 20-44 45-64 65+ Total <20 20-44 45-64 65+ Total <20 20-44 45-64 65+
19000 State of Iowa 2,966,334 756,930 1,014,069 760,115 435,220 2,816,321 700,756 951,701 735,978 427,886 69,141 24,672 28,391 12,142 3,936 9,905 3,621 4,068 1,885 331 44,297 12,134 22,649 7,471 2,043 26,670 15,747 7,260 2,639 1,024 108,968 42,712 49,802 13,143 3,311
19001 Adair County, Iowa 7,859 1,756 2,243 2,137 1,723 7,800 1,740 2,209 2,128 1,723 6 1 3 2 0 2 0 2 0 0 40 10 25 5 0 11 5 4 2 0 61 16 27 10 8
19003 Adams County, Iowa 4,264 981 1,155 1,185 943 4,231 963 1,144 1,181 943 1 1 0 0 0 22 14 6 2 0 10 3 5 2 0 0 0 0 0 0 27 12 8 5 2
19005 Allamakee County, Iowa 14,709 3,601 4,561 3,949 2,598 14,565 3,540 4,503 3,926 2,596 27 10 12 4 1 45 17 21 6 1 31 7 12 12 0 41 27 13 1 0 1,012 331 604 57 20
19007 Appanoose County, Iowa 13,666 3,251 4,236 3,597 2,582 13,462 3,182 4,143 3,570 2,567 89 29 34 14 12 8 3 4 1 0 60 15 38 6 1 47 22 17 6 2 146 70 52 15 9
19009 Audubon County, Iowa 6,457 1,582 1,655 1,773 1,447 6,411 1,556 1,637 1,771 1,447 10 7 3 0 0 4 0 4 0 0 15 9 5 1 0 17 10 6 1 0 37 14 18 3 2
19011 Benton County, Iowa 27,000 6,923 9,504 6,704 3,869 26,754 6,808 9,408 6,677 3,861 45 12 19 11 3 25 3 17 5 0 64 26 31 4 3 112 74 29 7 2 164 66 59 22 17
19013 Black Hawk County, Iowa 125,891 30,328 47,014 30,573 17,976 112,754 25,480 42,176 28,108 16,990 9,882 3,563 3,476 1,985 858 223 62 111 43 7 1,566 349 846 303 68 1,466 874 405 134 53 3,131 1,226 1,465 317 123
19015 Boone County, Iowa 26,602 6,432 8,883 7,117 4,170 26,225 6,291 8,715 7,061 4,158 184 68 94 20 2 48 16 15 14 3 86 18 52 12 4 59 39 7 10 3 264 118 107 31 8
19017 Bremer County, Iowa 23,677 5,872 7,611 6,296 3,898 23,290 5,714 7,435 6,254 3,887 124 46 66 9 3 22 4 16 2 0 138 45 64 23 6 103 63 30 8 2 171 59 75 28 9
19019 Buchanan County, Iowa 21,019 5,832 6,670 5,472 3,045 20,731 5,687 6,581 5,428 3,035 66 40 15 10 1 50 19 19 11 1 94 37 39 12 6 78 49 16 11 2 145 58 51 28 8
19021 Buena Vista County, Iowa 20,151 5,565 6,284 5,156 3,146 18,934 5,131 5,784 4,922 3,097 268 85 152 30 1 46 18 20 8 0 796 251 302 195 48 107 80 26 1 0 3,756 1,568 1,676 415 97
19023 Butler County, Iowa 15,072 3,494 4,363 4,311 2,904 14,963 3,429 4,331 4,304 2,899 20 13 5 1 1 4 0 3 1 0 37 15 16 4 2 48 37 8 1 2 101 40 37 15 9
19025 Calhoun County, Iowa 10,443 2,228 2,953 2,944 2,318 10,283 2,199 2,851 2,921 2,312 104 13 78 13 0 20 4 11 4 1 24 8 10 3 3 12 4 3 3 2 113 36 51 19 7
19027 Carroll County, Iowa 21,034 5,351 6,251 5,424 4,008 20,787 5,243 6,146 5,400 3,998 67 24 36 5 2 35 15 13 5 2 101 33 50 14 4 44 36 6 0 2 290 107 136 35 12
19029 Cass County, Iowa 14,219 3,181 4,099 3,920 3,019 14,078 3,136 4,038 3,895 3,009 32 13 10 6 3 11 1 5 4 1 66 17 40 6 3 32 14 6 9 3 155 46 84 19 6
19031 Cedar County, Iowa 18,254 4,380 5,780 5,241 2,853 17,993 4,269 5,678 5,201 2,845 66 26 32 5 3 37 7 16 13 1 69 17 37 14 1 89 61 17 8 3 223 77 101 38 7
19033 Cerro Gordo County, Iowa 44,645 10,697 13,695 12,399 7,854 43,314 10,111 13,182 12,225 7,796 466 191 188 65 22 91 19 51 18 3 377 121 165 65 26 397 255 109 26 7 1,337 484 507 217 129
19035 Cherokee County, Iowa 12,237 2,814 3,285 3,609 2,529 12,080 2,750 3,232 3,578 2,520 46 21 13 11 1 29 4 15 9 1 59 22 21 10 6 23 17 4 1 1 229 101 98 23 7
19037 Chickasaw County, Iowa 12,563 3,142 3,610 3,532 2,279 12,472 3,097 3,581 3,519 2,275 9 4 2 2 1 1 0 1 0 0 46 19 18 6 3 35 22 8 5 0 123 65 30 19 9
19039 Clarke County, Iowa 9,161 2,364 2,796 2,460 1,541 9,045 2,305 2,767 2,439 1,534 13 7 5 0 1 37 17 9 8 3 42 16 13 12 1 24 19 2 1 2 549 185 259 92 13
19041 Clay County, Iowa 16,897 3,983 5,238 4,563 3,113 16,654 3,878 5,150 4,523 3,103 35 17 13 5 0 13 2 9 2 0 149 56 55 29 9 46 30 11 4 1 329 89 210 25 5
19043 Clayton County, Iowa 18,337 4,389 5,382 5,124 3,442 18,192 4,318 5,328 5,105 3,441 30 14 8 8 0 50 16 27 7 0 25 10 10 4 1 40 31 9 0 0 170 49 101 13 7
19045 Clinton County, Iowa 49,717 12,424 15,894 13,442 7,957 47,665 11,621 15,167 13,034 7,843 1,098 382 426 225 65 144 41 67 34 2 295 85 104 87 19 515 295 130 62 28 800 313 355 104 28
19047 Crawford County, Iowa 16,889 4,554 5,114 4,482 2,739 16,503 4,372 4,959 4,450 2,722 197 90 98 7 2 80 46 26 8 0 85 27 28 15 15 24 19 3 2 0 2,827 1,013 1,510 266 38
19049 Dallas County, Iowa 51,762 13,210 22,057 11,851 4,644 49,916 12,644 21,047 11,618 4,607 586 157 328 88 13 98 30 50 17 1 783 181 481 102 19 379 198 151 26 4 3,022 1,147 1,480 358 37
19051 Davis County, Iowa 8,659 2,308 2,662 2,245 1,444 8,574 2,263 2,637 2,235 1,439 18 13 3 1 1 11 4 6 1 0 16 3 7 5 1 40 25 9 3 3 78 24 36 12 6
19053 Decatur County, Iowa 8,605 2,149 3,005 1,964 1,487 8,344 2,069 2,856 1,940 1,479 104 40 57 5 2 14 2 9 3 0 89 20 61 8 0 54 18 22 8 6 184 54 100 22 8
19055 Delaware County, Iowa 18,025 4,782 5,588 4,788 2,867 17,923 4,725 5,564 4,768 2,866 17 11 2 4 0 14 4 7 3 0 31 14 8 8 1 40 28 7 5 0 146 68 48 26 4
19057 Des Moines County, Iowa 40,810 10,216 12,266 11,542 6,786 38,383 9,233 11,437 11,090 6,623 1,546 564 540 330 112 122 33 58 25 6 303 91 118 61 33 456 295 113 36 12 958 365 412 142 39
19059 Dickinson County, Iowa 16,687 3,534 4,864 4,855 3,434 16,541 3,468 4,805 4,836 3,432 30 16 12 2 0 34 9 20 4 1 35 12 11 12 0 47 29 16 1 1 149 56 70 17 6
19061 Dubuque County, Iowa 91,631 24,217 30,121 23,498 13,795 88,749 22,976 28,895 23,169 13,709 1,196 488 565 131 12 123 43 46 26 8 804 230 423 109 42 759 480 192 63 24 1,418 478 737 161 42
19063 Emmet County, Iowa 10,534 2,675 3,113 2,782 1,964 10,402 2,615 3,058 2,771 1,958 29 11 16 0 2 45 19 18 8 0 44 17 20 3 4 14 13 1 0 0 525 247 196 70 12
19065 Fayette County, Iowa 21,298 5,109 6,507 5,642 4,040 20,911 4,994 6,271 5,608 4,038 164 46 106 12 0 25 3 18 4 0 123 27 83 11 2 75 39 29 7 0 322 113 128 55 26
19067 Floyd County, Iowa 16,443 3,981 4,796 4,478 3,188 16,138 3,861 4,664 4,432 3,181 96 29 53 13 1 15 1 10 4 0 109 29 53 22 5 85 61 16 7 1 266 106 97 52 11
19069 Franklin County, Iowa 10,732 2,602 3,079 3,004 2,047 10,609 2,540 3,027 2,997 2,045 12 10 2 0 0 26 9 15 2 0 64 24 34 5 1 21 19 1 0 1 1,132 425 539 143 25
19071 Fremont County, Iowa 7,759 1,904 2,129 2,213 1,513 7,675 1,875 2,094 2,194 1,512 7 4 0 3 0 19 5 11 3 0 33 6 16 10 1 25 14 8 3 0 183 66 76 35 6
19073 Greene County, Iowa 9,963 2,396 2,829 2,654 2,084 9,838 2,339 2,787 2,634 2,078 20 12 7 0 1 27 5 15 6 1 36 16 9 9 2 42 24 11 5 2 208 114 69 20 5
19075 Grundy County, Iowa 12,329 2,930 3,625 3,462 2,312 12,240 2,875 3,608 3,447 2,310 15 7 5 3 0 1 0 0 1 0 38 22 8 6 2 35 26 4 5 0 90 32 38 11 9
19077 Guthrie County, Iowa 11,547 2,660 3,604 3,133 2,150 11,484 2,621 3,589 3,125 2,149 17 11 4 1 1 0 0 0 0 0 10 2 7 1 0 36 26 4 6 0 224 88 111 20 5
19079 Hamilton County, Iowa 16,209 4,002 5,030 4,333 2,844 15,717 3,760 4,866 4,274 2,817 69 35 29 5 0 47 20 20 6 1 290 116 104 46 24 86 71 11 2 2 342 132 159 36 15
19081 Hancock County, Iowa 11,786 2,855 3,411 3,351 2,169 11,656 2,803 3,347 3,338 2,168 14 7 6 1 0 13 4 7 2 0 70 18 43 8 1 33 23 8 2 0 415 142 196 64 13
19083 Hardin County, Iowa 18,003 4,508 4,940 4,876 3,679 17,724 4,366 4,842 4,853 3,663 139 71 59 4 5 27 16 8 3 0 76 28 25 13 10 37 27 6 3 1 517 214 208 79 16
19085 Harrison County, Iowa 15,884 3,976 4,962 4,247 2,699 15,725 3,923 4,884 4,224 2,694 18 12 3 2 1 20 2 12 6 0 59 11 40 7 1 62 28 23 8 3 185 84 75 20 6
19087 Henry County, Iowa 20,246 4,866 7,159 5,240 2,981 19,247 4,561 6,649 5,092 2,945 362 82 241 34 5 62 15 36 11 0 445 120 204 91 30 130 88 29 12 1 376 122 211 34 9
19089 Howard County, Iowa 9,700 2,425 2,840 2,549 1,886 9,624 2,380 2,821 2,538 1,885 18 7 8 2 1 19 8 5 6 0 17 10 4 3 0 22 20 2 0 0 64 25 21 13 5
19091 Humboldt County, Iowa 9,973 2,352 2,740 2,847 2,034 9,847 2,318 2,661 2,836 2,032 40 7 33 0 0 6 3 3 0 0 53 13 29 9 2 27 11 14 2 0 232 58 154 14 6
19093 Ida County, Iowa 7,379 1,735 2,008 2,042 1,594 7,319 1,716 1,981 2,033 1,589 21 5 15 0 1 5 2 1 2 0 15 3 4 5 3 19 9 7 2 1 55 28 21 4 2
19095 Iowa County, Iowa 16,055 4,097 5,041 4,217 2,700 15,932 4,041 4,995 4,200 2,696 37 17 15 5 0 17 7 7 3 0 50 17 22 8 3 19 15 2 1 1 189 81 75 22 11
19097 Jackson County, Iowa 20,335 4,959 6,236 5,536 3,604 20,122 4,865 6,144 5,514 3,599 36 20 14 1 1 30 9 15 6 0 55 7 37 8 3 92 58 26 7 1 134 38 60 20 16
19099 Jasper County, Iowa 37,674 9,079 12,545 10,047 6,003 36,657 8,789 12,012 9,886 5,970 459 84 309 59 7 106 18 48 37 3 265 89 125 34 17 187 99 51 31 6 476 157 238 59 22
19101 Jefferson County, Iowa 15,972 3,507 4,767 5,545 2,153 15,432 3,372 4,496 5,426 2,138 152 34 82 27 9 29 6 16 7 0 282 54 149 73 6 77 41 24 12 0 350 124 152 63 11
19103 Johnson County, Iowa 117,067 27,978 56,471 23,178 9,440 105,979 24,489 50,344 21,953 9,193 3,920 1,289 2,081 479 71 352 99 181 59 13 5,197 1,254 3,251 567 125 1,619 847 614 120 38 3,434 1,197 1,804 356 77
19105 Jones County, Iowa 20,509 4,666 7,265 5,362 3,216 19,908 4,555 6,845 5,296 3,212 402 50 307 44 1 68 10 47 10 1 50 17 29 4 0 81 34 37 8 2 283 82 162 28 11
19107 Keokuk County, Iowa 11,157 2,774 3,257 3,014 2,112 11,077 2,745 3,230 2,999 2,103 13 8 4 0 1 12 4 4 4 0 38 5 17 8 8 17 12 2 3 0 76 40 24 8 4
19109 Kossuth County, Iowa 16,142 3,883 4,204 4,725 3,330 15,990 3,801 4,161 4,705 3,323 31 11 16 3 1 27 15 7 4 1 58 23 17 13 5 36 33 3 0 0 163 66 54 30 13
19111 Lee County, Iowa 36,705 8,871 10,956 10,813 6,065 34,919 8,331 10,267 10,388 5,933 1,133 270 467 298 98 62 14 22 25 1 234 49 115 52 18 357 207 85 50 15 940 294 315 219 112
19113 Linn County, Iowa 198,903 52,646 70,855 50,350 25,052 186,300 47,350 65,783 48,591 24,576 5,904 2,274 2,460 923 247 470 145 214 100 11 3,212 943 1,692 481 96 3,017 1,934 706 255 122 3,090 1,165 1,348 443 134
19115 Louisa County, Iowa 11,842 3,231 3,742 3,092 1,777 11,723 3,195 3,695 3,062 1,771 37 10 15 10 2 12 0 6 5 1 49 12 24 12 1 21 14 2 3 2 1,675 736 705 192 42
19117 Lucas County, Iowa 9,672 2,391 3,048 2,477 1,756 9,580 2,355 3,013 2,460 1,752 17 14 3 0 0 8 1 3 4 0 49 17 24 6 2 18 4 5 7 2 91 36 36 12 7
19119 Lyon County, Iowa 11,750 3,235 3,512 2,949 2,054 11,645 3,194 3,469 2,931 2,051 31 9 21 1 0 15 6 6 2 1 26 6 6 13 1 33 20 10 2 1 64 33 26 3 2
19121 Madison County, Iowa 15,158 3,967 5,084 4,021 2,086 14,992 3,888 5,029 3,994 2,081 23 9 8 5 1 45 19 16 9 1 32 10 17 4 1 66 41 14 9 2 134 56 55 15 8
19123 Mahaska County, Iowa 22,364 5,754 7,511 5,639 3,460 21,670 5,507 7,170 5,565 3,428 209 69 129 8 3 52 20 19 13 0 272 66 142 40 24 161 92 51 13 5 292 102 151 32 7
19125 Marion County, Iowa 32,984 8,486 11,020 8,268 5,210 32,280 8,207 10,792 8,114 5,167 154 41 45 51 17 67 23 25 17 2 335 120 132 64 19 148 95 26 22 5 360 126 176 52 6
19127 Marshall County, Iowa 39,418 10,215 12,039 10,832 6,332 37,999 9,615 11,513 10,613 6,258 468 168 209 71 20 186 61 80 34 11 401 140 150 78 33 364 231 87 36 10 5,022 2,195 2,221 500 106
19129 Mills County, Iowa 15,284 3,971 5,082 4,411 1,820 15,080 3,906 4,984 4,379 1,811 61 15 38 4 4 36 6 23 6 1 44 16 16 10 2 63 28 21 12 2 338 123 155 54 6
19131 Mitchell County, Iowa 10,919 2,830 2,946 2,858 2,285 10,867 2,800 2,937 2,847 2,283 19 11 4 3 1 8 1 4 2 1 20 14 1 5 0 5 4 0 1 0 65 30 21 7 7
19133 Monona County, Iowa 9,520 2,126 2,616 2,592 2,186 9,389 2,069 2,569 2,572