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    Jan 1990    
 
 
    Feb 2019
Persons
Name Feb 2019 Jan 2019 Feb 2018
Adair County
4,204 4,136 4,091
Adams County
2,176 2,146 2,087
Allamakee County
7,488 7,449 7,421
Appanoose County
5,952 5,920 5,923
Audubon County
3,202 3,161 3,025
Benton County
13,501 13,400 13,453
Black Hawk County
69,786 68,662 68,158
Boone County
15,066 14,731 14,810
Bremer County
14,086 13,821 13,589
Buchanan County
11,116 11,000 10,941
Buena Vista County
11,425 11,216 11,400
Butler County
7,925 7,810 7,725
Calhoun County
4,324 4,290 4,166
Carroll County
10,878 10,803 10,760
Cass County
7,110 7,033 7,000
Cedar County
10,885 10,800 10,767
Cerro Gordo County
23,507 23,365 23,088
Cherokee County
6,070 6,008 5,987
Chickasaw County
6,499 6,470 6,319
Clarke County
4,936 4,898 4,812
Clay County
8,657 8,657 8,447
Clayton County
10,233 10,111 9,968
Clinton County
22,403 22,325 22,811
Crawford County
8,246 8,161 7,933
Dallas County
48,431 48,028 45,818
Davis County
4,336 4,291 4,194
Decatur County
4,400 4,347 4,389
Delaware County
10,565 10,463 10,387
Des Moines County
19,342 19,284 19,223
Dickinson County
9,507 9,442 9,514
Dubuque County
56,119 55,829 54,342
Emmet County
5,255 5,203 5,347
Fayette County
10,947 10,750 10,450
Floyd County
9,098 8,922 8,774
Franklin County
5,831 5,759 5,619
Fremont County
3,746 3,703 3,730
Greene County
5,521 5,433 5,316
Grundy County
6,702 6,562 6,460
Guthrie County
5,761 5,663 5,559
Hamilton County
7,047 6,893 7,002
Hancock County
5,979 5,926 6,046
Hardin County
8,376 8,219 8,279
Harrison County
7,465 7,377 7,285
Henry County
9,764 9,612 9,810
Howard County
5,434 5,375 5,007
Humboldt County
5,238 5,209 5,181
Ida County
4,201 4,130 4,003
Iowa County
10,670 10,539 10,540
Jackson County
11,110 11,001 10,799
Jasper County
19,456 19,302 19,131
Jefferson County
9,334 9,199 8,879
Johnson County
85,345 84,530 85,473
Jones County
10,690 10,577 10,590
Keokuk County
5,122 5,055 5,092
Kossuth County
8,630 8,501 8,414
Lee County
16,172 16,013 16,069
Linn County
119,567 119,138 118,833
Louisa County
6,137 6,028 5,969
Lucas County
4,628 4,587 4,353
Lyon County
6,976 6,974 6,813
Madison County
8,659 8,573 8,359
Mahaska County
11,819 11,624 11,386
Marion County
18,205 17,724 17,250
Marshall County
18,025 18,041 18,191
Mills County
7,428 7,361 7,247
Mitchell County
5,845 5,662 5,674
Monona County
4,512 4,451 4,418
Monroe County
4,029 3,969 3,844
Montgomery County
5,038 4,976 4,899
Muscatine County
21,600 21,586 21,433
O'Brien County
8,222 8,140 7,931
Osceola County
3,548 3,523 3,435
Page County
6,422 6,351 6,114
Palo Alto County
4,984 4,959 4,854
Plymouth County
15,137 14,925 14,428
Pocahontas County
4,297 4,243 3,942
Polk County
268,642 267,159 258,974
Pottawattamie County
48,491 48,199 47,927
Poweshiek County
10,793 9,748 10,208
Ringgold County
2,546 2,513 2,548
Sac County
5,327 5,207 5,288
Scott County
87,072 87,147 86,113
Shelby County
6,718 6,644 6,538
Sioux County
20,984 20,735 20,312
Story County
60,006 57,488 59,053
Tama County
9,769 9,677 9,665
Taylor County
3,239 3,177 3,235
Union County
6,396 6,334 6,509
Van Buren County
3,652 3,606 3,622
Wapello County
17,638 17,528 17,575
Warren County
28,176 27,944 27,319
Washington County
12,332 12,140 12,462
Wayne County
2,830 2,793 2,794
Webster County
18,991 18,892 19,104
Winneshiek County
12,330 11,628 11,678
Winnebago County
5,001 4,946 5,091
Woodbury County
56,235 55,701 54,106
Worth County
4,202 4,161 4,152
Wright County
6,532 6,480 6,347
   

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