(CO-99-4) County Population Estimates for July 1, 1999 and Demographic Components of Population Change: April 1, 1990 to July 1, 1999 (includes revised April 1, 1990 Population Estimates Base) Two additional components of demographic change--net federal movement and a residual--are not included in this table. Source: Population Estimates Program, Population Division, U.S. Census Bureau, Washington, DC 20233 Contact: Demographic Call Center Staff, 1-866-758-1060 Internet Release Date: March 9, 2000 4/1/90 Net Net Population International Domestic 7/1/99 Estimates Births Deaths Migration Migration FIPS State/County Code and Area Name Estimate Base 1990-99 1990-99 1990-99 1990-99 19 Iowa.............................. 2,869,413 2,776,831 349,191 256,794 21,151 -15,542 19001 Adair County, IA.................. 8,066 8,409 739 1,108 4 61 19003 Adams County, IA.................. 4,405 4,866 452 572 3 -324 19005 Allamakee County, IA.............. 14,068 13,855 1,612 1,592 76 167 19007 Appanoose County, IA.............. 13,446 13,743 1,462 1,768 13 49 19009 Audubon County, IA................ 6,802 7,334 717 886 6 -337 19011 Benton County, IA................. 25,798 22,429 2,729 1,961 9 2,380 19013 Black Hawk County, IA............. 119,959 123,798 15,140 10,822 570 -8,363 19015 Boone County, IA.................. 26,300 25,186 2,794 2,746 35 1,099 19017 Bremer County, IA................. 23,440 22,813 2,222 2,073 2 558 19019 Buchanan County, IA............... 21,160 20,844 2,736 1,960 47 -427 19021 Buena Vista County, IA............ 19,404 19,965 2,277 1,959 303 -1,099 19023 Butler County, IA................. 15,499 15,731 1,479 1,772 16 104 19025 Calhoun County, IA................ 11,319 11,508 1,008 1,531 11 378 19027 Carroll County, IA................ 21,518 21,423 2,440 2,139 27 -153 19029 Cass County, IA................... 14,512 15,128 1,539 1,858 26 -272 19031 Cedar County, IA.................. 18,056 17,444 1,878 1,562 30 336 19033 Cerro Gordo County, IA............ 45,669 46,733 5,462 4,654 103 -1,841 19035 Cherokee County, IA............... 13,060 14,098 1,342 1,565 2 -777 19037 Chickasaw County, IA.............. 13,423 13,295 1,471 1,352 23 47 19039 Clarke County, IA................. 8,273 8,287 858 913 7 63 19041 Clay County, IA................... 17,245 17,585 1,965 1,628 28 -644 19043 Clayton County, IA................ 18,582 19,054 1,980 1,994 17 -402 19045 Clinton County, IA................ 49,612 51,040 6,066 5,149 134 -2,324 19047 Crawford County, IA............... 16,427 16,775 1,931 1,597 101 -727 19049 Dallas County, IA................. 38,210 29,755 4,284 2,729 246 6,108 19051 Davis County, IA.................. 8,517 8,312 1,107 914 5 37 19053 Decatur County, IA................ 8,319 8,338 902 1,074 8 168 19055 Delaware County, IA............... 18,482 18,035 2,271 1,508 12 -261 19057 Des Moines County, IA............. 41,955 42,614 5,173 4,141 76 -1,617 19059 Dickinson County, IA.............. 16,285 14,909 1,391 1,608 40 1,601 19061 Dubuque County, IA................ 88,112 86,403 11,161 7,731 177 -1,960 19063 Emmet County, IA.................. 10,638 11,569 1,171 1,314 54 -799 19065 Fayette County, IA................ 21,566 21,843 2,506 2,379 29 -361 19067 Floyd County, IA.................. 16,256 17,058 1,883 1,962 55 -710 19069 Franklin County, IA............... 10,781 11,364 1,173 1,239 45 -511 19071 Fremont County, IA................ 7,706 8,226 799 1,113 12 -181 19073 Greene County, IA................. 10,020 10,045 1,100 1,286 18 181 19075 Grundy County, IA................. 12,284 12,029 1,165 1,197 7 326 19077 Guthrie County, IA................ 11,591 10,935 1,187 1,253 10 751 19079 Hamilton County, IA............... 15,905 16,071 1,876 1,678 49 -356 19081 Hancock County, IA................ 12,037 12,638 1,239 1,219 28 -613 19083 Hardin County, IA................. 18,159 19,094 1,909 2,261 21 -553 19085 Harrison County, IA............... 15,216 14,730 1,667 1,889 11 746 19087 Henry County, IA.................. 20,139 19,226 2,257 1,843 93 474 19089 Howard County, IA................. 9,574 9,809 1,006 1,198 16 -18 19091 Humboldt County, IA............... 10,224 10,756 1,053 1,217 16 -338 19093 Ida County, IA.................... 7,930 8,365 884 986 22 -329 19095 Iowa County, IA................... 15,667 14,630 1,872 1,580 18 773 19097 Jackson County, IA................ 20,157 19,950 2,375 2,135 11 -72 19099 Jasper County, IA................. 36,659 34,795 4,031 3,292 22 1,223 19101 Jefferson County, IA.............. 16,762 16,310 1,598 1,471 369 -1 19103 Johnson County, IA................ 103,813 96,119 12,184 4,336 1,262 -1,173 19105 Jones County, IA.................. 20,075 19,444 2,147 1,646 22 175 19107 Keokuk County, IA................. 11,340 11,624 1,317 1,329 15 -235 19109 Kossuth County, IA................ 17,630 18,591 1,794 1,941 40 -784 19111 Lee County, IA.................... 38,309 38,687 4,511 4,107 79 -737 19113 Linn County, IA................... 184,891 168,767 24,182 12,254 1,043 2,789 19115 Louisa County, IA................. 11,945 11,592 1,535 1,073 211 -273 19117 Lucas County, IA.................. 9,131 9,070 1,025 1,066 33 114 19119 Lyon County, IA................... 12,030 11,952 1,434 1,169 -9 -133 19121 Madison County, IA................ 14,105 12,483 1,492 1,448 3 1,605 19123 Mahaska County, IA................ 21,954 21,532 2,532 2,124 87 0 19125 Marion County, IA................. 31,529 30,001 3,465 2,949 65 1,041 19127 Marshall County, IA............... 38,782 38,276 4,670 4,681 413 294 19129 Mills County, IA.................. 14,705 13,202 1,520 1,206 10 1,207 19131 Mitchell County, IA............... 11,106 10,928 1,282 1,383 9 322 19133 Monona County, IA................. 10,089 10,034 1,086 1,431 11 304 19135 Monroe County, IA................. 8,017 8,114 933 980 8 -13 19137 Montgomery County, IA............. 11,707 12,076 1,371 1,674 10 -21 19139 Muscatine County, IA.............. 41,195 39,907 5,818 3,433 706 -1,699 19141 O'Brien County, IA................ 14,621 15,444 1,762 1,777 11 -785 19143 Osceola County, IA................ 6,914 7,267 782 780 9 -338 19145 Page County, IA................... 17,139 16,870 1,643 2,148 27 811 19147 Palo Alto County, IA.............. 9,917 10,669 990 1,337 7 -384 19149 Plymouth County, IA............... 24,819 23,388 2,943 2,204 52 494 19151 Pocahontas County, IA............. 8,774 9,525 787 1,148 6 -359 19153 Polk County, IA................... 364,672 327,140 51,994 24,621 8,364 1,955 19155 Pottawattamie County, IA.......... 86,425 82,628 11,076 7,159 355 -180 19157 Poweshiek County, IA.............. 18,693 19,033 1,934 1,877 31 -356 19159 Ringgold County, IA............... 5,361 5,420 467 751 -1 254 19161 Sac County, IA.................... 11,761 12,324 1,278 1,544 17 -272 19163 Scott County, IA.................. 159,458 150,973 21,575 11,514 1,690 -3,042 19165 Shelby County, IA................. 12,781 13,230 1,376 1,505 11 -284 19167 Sioux County, IA.................. 31,355 29,903 3,856 2,206 70 -178 19169 Story County, IA.................. 75,373 74,252 8,017 3,884 762 -3,572 19171 Tama County, IA................... 17,788 17,419 2,078 2,011 124 249 19173 Taylor County, IA................. 7,025 7,114 685 938 33 153 19175 Union County, IA.................. 12,611 12,750 1,343 1,525 18 80 19177 Van Buren County, IA.............. 7,873 7,676 829 921 10 306 19179 Wapello County, IA................ 35,458 35,696 4,086 4,166 86 -115 19181 Warren County, IA................. 40,614 36,033 4,610 2,690 82 2,707 19183 Washington County, IA............. 21,147 19,612 2,699 2,131 154 915 19185 Wayne County, IA.................. 6,581 7,067 660 1,036 11 -86 19187 Webster County, IA................ 38,832 40,342 4,914 4,583 62 -1,779 19189 Winnebago County, IA.............. 11,971 12,122 1,265 1,347 14 -34 19191 Winneshiek County, IA............. 20,917 20,847 2,126 1,707 84 -351 19193 Woodbury County, IA............... 101,437 98,276 15,395 8,907 1,964 -5,148 19195 Worth County, IA.................. 7,657 7,991 808 961 3 -141 19197 Wright County, IA................. 13,892 14,269 1,576 1,808 14 -105