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    Jan 1990    
 
 
    Oct 2018
Persons
Name Oct 2018 Sep 2018 Oct 2017
Adair County
4,163 4,155 4,190
Adams County
2,091 2,108 2,125
Allamakee County
7,375 7,384 7,494
Appanoose County
5,939 5,940 5,945
Audubon County
3,007 3,017 3,172
Benton County
13,520 13,450 13,457
Black Hawk County
68,432 67,783 67,939
Boone County
14,940 14,866 14,874
Bremer County
13,646 13,559 13,677
Buchanan County
10,911 10,993 10,865
Buena Vista County
11,640 11,392 11,510
Butler County
7,752 7,742 7,881
Calhoun County
4,233 4,236 4,339
Carroll County
10,834 10,886 10,960
Cass County
6,924 6,961 7,005
Cedar County
10,877 10,789 10,850
Cerro Gordo County
23,533 23,326 23,060
Cherokee County
5,949 6,048 6,096
Chickasaw County
6,454 6,410 6,490
Clarke County
4,793 4,773 4,714
Clay County
8,452 8,483 8,519
Clayton County
10,135 10,126 10,142
Clinton County
22,773 22,716 22,963
Crawford County
7,862 7,889 8,126
Dallas County
47,678 46,968 45,979
Davis County
4,190 4,251 4,250
Decatur County
4,337 4,363 4,374
Delaware County
10,345 10,360 10,471
Des Moines County
19,179 19,198 19,253
Dickinson County
9,845 10,213 9,696
Dubuque County
54,898 53,961 54,232
Emmet County
5,337 5,336 5,449
Fayette County
10,398 10,212 10,559
Floyd County
8,824 8,817 8,837
Franklin County
5,678 5,732 5,783
Fremont County
3,781 3,746 3,853
Greene County
5,435 5,346 5,421
Grundy County
6,446 6,433 6,525
Guthrie County
5,633 5,611 5,582
Hamilton County
7,071 7,037 7,095
Hancock County
6,124 6,074 6,138
Hardin County
8,271 8,309 8,458
Harrison County
7,409 7,392 7,350
Henry County
9,937 9,844 9,908
Howard County
4,950 5,037 5,091
Humboldt County
5,266 5,277 5,289
Ida County
4,105 4,074 4,096
Iowa County
10,761 10,690 10,741
Jackson County
10,852 10,802 10,911
Jasper County
19,415 19,286 19,250
Jefferson County
8,875 8,914 8,830
Johnson County
86,891 85,691 85,144
Jones County
10,447 10,435 10,482
Keokuk County
5,090 5,095 5,202
Kossuth County
8,506 8,608 8,593
Lee County
16,015 15,766 15,770
Linn County
119,737 118,829 117,617
Louisa County
6,033 5,993 6,047
Lucas County
4,254 4,240 4,319
Lyon County
6,916 6,933 7,050
Madison County
8,514 8,405 8,245
Mahaska County
11,410 11,477 11,436
Marion County
17,785 17,729 17,422
Marshall County
17,948 17,923 17,971
Mills County
7,415 7,363 7,315
Mitchell County
5,797 5,855 5,700
Monona County
4,357 4,375 4,440
Monroe County
3,828 3,873 3,875
Montgomery County
4,882 4,913 4,918
Muscatine County
21,478 21,488 21,559
O'Brien County
7,984 7,968 8,012
Osceola County
3,499 3,507 3,579
Page County
6,071 6,087 6,213
Palo Alto County
4,964 4,919 4,970
Plymouth County
14,644 14,582 14,632
Pocahontas County
4,266 4,276 4,406
Polk County
268,616 263,965 258,085
Pottawattamie County
48,991 48,539 47,823
Poweshiek County
10,517 10,388 10,881
Ringgold County
2,523 2,551 2,597
Sac County
5,291 5,327 5,403
Scott County
87,817 86,681 85,647
Shelby County
6,538 6,571 6,618
Sioux County
20,440 20,458 20,673
Story County
60,709 59,790 59,237
Tama County
9,658 9,531 9,596
Taylor County
3,242 3,261 3,257
Union County
6,370 6,356 6,421
Van Buren County
3,602 3,651 3,676
Wapello County
17,451 17,507 17,526
Warren County
28,192 27,783 27,109
Washington County
12,449 12,376 12,390
Wayne County
2,745 2,727 2,817
Webster County
19,390 19,287 19,167
Winneshiek County
11,871 11,893 12,125
Winnebago County
5,139 5,138 5,185
Woodbury County
55,054 54,396 54,017
Worth County
4,196 4,197 4,212
Wright County
6,343 6,383 6,500
   

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