Iowa
Counties | Estimated
Growth Rate
% | Estimated
Population
2005 | Actual Census
2000 | | | Iowa | 1.29% | 2,966,334 | 2,928,460 | | | | | | | Adair County | -4.30% | 7,859 | 8,212 | | Adams County | -4.80% | 4,264 | 4,479 | | Allamakee County | 0.20% | 14,709 | 14,680 | | Appanoose County | -0.26% | 13,666 | 13,702 | | Audubon County | -5.18% | 6,457 | 6,810 | | Benton County | 6.53% | 27,000 | 25,344 | | Black Hawk County | -1.58% | 125,891 | 127,911 | | Boone County | 1.33% | 26,602 | 26,254 | | Bremer County | 1.64% | 23,677 | 23,295 | | Buchanan County | -0.29% | 21,019 | 21,080 | | Buena Vista County | -1.05% | 20,151 | 20,364 | | Butler County | -1.61% | 15,072 | 15,319 | | Calhoun County | -5.82% | 10,443 | 11,088 | | Carroll County | -1.55% | 21,034 | 21,365 | | Cass County | -3.17% | 14,219 | 14,684 | | Cedar County | 0.19% | 18,254 | 18,219 | | Cerro Gordo County | -3.65% | 44,645 | 46,336 | | Cherokee County | -6.00% | 12,237 | 13,018 | | Chickasaw County | -3.89% | 12,563 | 13,071 | | Clarke County | -0.37% | 9,161 | 9,195 | | Clay County | -2.80% | 16,897 | 17,384 | | Clayton County | -1.53% | 18,337 | 18,622 | | Clinton County | -0.72% | 49,717 | 50,078 | | Crawford County | -0.28% | 16,889 | 16,937 | | Dallas County | 26.07% | 51,762 | 41,058 | | Davis County | 1.25% | 8,659 | 8,552 | | Decatur County | -0.90% | 8,605 | 8,683 | | Delaware County | -2.02% | 18,025 | 18,396 | | Des Moines County | -3.50% | 40,810 | 42,291 | | Dickinson County | 1.32% | 16,687 | 16,469 | | Dubuque County | 2.66% | 91,631 | 89,261 | | Emmet County | -4.19% | 10,534 | 10,995 | | Fayette County | -3.20% | 21,298 | 22,002 | | Floyd County | -2.49% | 16,443 | 16,863 | | Franklin County | 0.40% | 10,732 | 10,689 | | Fremont County | -3.02% | 7,759 | 8,001 | | Greene County | -3.69% | 9,963 | 10,345 | | Grundy County | -0.36% | 12,329 | 12,373 | | Guthrie County | 1.73% | 11,547 | 11,351 | | Hamilton County | -1.32% | 16,209 | 16,425 | | Hancock County | -2.62% | 11,786 | 12,103 | | Hardin County | -4.35% | 18,003 | 18,822 | | Harrison County | 1.14% | 15,884 | 15,705 | | Henry County | -0.28% | 20,246 | 20,303 | | Howard County | -2.18% | 9,700 | 9,916 | | Humboldt County | -3.85% | 9,973 | 10,372 | | Ida County | -5.48% | 7,379 | 7,807 | | Iowa County | 2.16% | 16,055 | 15,716 | | Jackson County | 0.12% | 20,335 | 20,311 | | Jasper County | 1.14% | 37,674 | 37,251 | | Jefferson County | -1.19% | 15,972 | 16,165 | | Johnson County | 5.21% | 117,067 | 111,267 | | Jones County | 1.45% | 20,509 | 20,215 | | Keokuk County | -2.35% | 11,157 | 11,425 | | Kossuth County | -5.77% | 16,142 | 17,131 | | Lee County | -3.25% | 36,705 | 37,939 | | Linn County | 3.46% | 198,903 | 192,245 | | Louisa County | -2.71% | 11,842 | 12,172 | | Lucas County | 2.77% | 9,672 | 9,411 | | Lyon County | 0.00% | 11,750 | 11,750 | | Madison County | 7.78% | 15,158 | 14,064 | | Mahaska County | 0.25% | 22,364 | 22,308 | | Marion County | 2.69% |
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